http://science-ed.fullsubject.com/feed/? Latest topics Thu, 21 May 2009 14:43:12 GMT 10 http://illiweb.com/fa/prosilver_magenta/site_logo.gif http://science-ed.fullsubject.com/feed/? http://science-ed.fullsubject.com/discussion-f67/terminology-game-t46.htm Alla
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Two sulfur containing amino acids are __________ and __________.]]> Discussion Thu, 26 Jun 2008 22:42:57 GMT http://science-ed.fullsubject.com/discussion-f67/terminology-game-t46.htm#114 http://science-ed.fullsubject.com/discussion-f67/terminology-game-t46.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/true-breeding-drosophila-t10.htm Alla Data: _______Male - Female WT_____42 - 74 CR _____12 -26 P_______32 -0 P, CR___14 - 0 First, examine relationship to determine if 2 mutations are linked. Since CR (curly) and P (purple) can occur independently, they are not on the same chromosome. Second, CR occurs equally in males and females 26:26 (or 1:1) and, therefore, is not sex linked. Now, examine the numbers of non-CR and CR, they are 148:52, which is approximately 3:1 of wt:mutant (for this particular trait). This ... 1 on 1 Tutoring Fri, 14 Mar 2008 02:06:20 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/true-breeding-drosophila-t10.htm#11 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/true-breeding-drosophila-t10.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f66/how-to-calculate-the-net-charge-of-a-polypeptide-chain-t70.htm edwin_os I have spent a lot of time trying to understand this but can not. so please kindly help. if you a given a set of PH values and ask to find the net charges on a polypeptide chain. how do you do this. I understand that when the PH < PKa = Protonated and when PH > PKa = Deprotonated, and when PH = PKa = 50/50 change. so I was given a set of PH (e.g.) PH 3, 7, 10. how can I calculate the net charges. Please help. 1 on 1 Tutoring Thu, 21 May 2009 14:43:12 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f66/how-to-calculate-the-net-charge-of-a-polypeptide-chain-t70.htm#183 http://science-ed.fullsubject.com/1-on-1-tutoring-f66/how-to-calculate-the-net-charge-of-a-polypeptide-chain-t70.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f45/molecular-genetics-t69.htm wannabnurse Hi, I was hoping to get help with this. We just started this chapter and was given a practice problem. I was hoping you could walk me through it so i can understand...THANKS Using the following amino acid sequence, provide the tRNA molecules (anitcodons) that were used for its translation and the anti-sense strand of the DNA for this gene. Include polarity of all items [b]COOH-methionine-proline-isoleucine-aspartate-glycine-glutamine-methinone-leucine-proline-valine-arganine-NH2[/b] 1 on 1 Tutoring Thu, 30 Apr 2009 21:59:29 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f45/molecular-genetics-t69.htm#178 http://science-ed.fullsubject.com/1-on-1-tutoring-f45/molecular-genetics-t69.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/blood-type-probability-t68.htm wannabnurse
THANKS]]> 1 on 1 Tutoring Sat, 25 Apr 2009 19:39:54 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/blood-type-probability-t68.htm#176 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/blood-type-probability-t68.htm http://science-ed.fullsubject.com/immunology-f26/terminology-game-t42.htm Alla
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What is the name of red blood cells?]]> Immunology Thu, 26 Jun 2008 22:25:47 GMT http://science-ed.fullsubject.com/immunology-f26/terminology-game-t42.htm#110 http://science-ed.fullsubject.com/immunology-f26/terminology-game-t42.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/what-are-the-genotypes-t67.htm wannabnurse
In humans, color blindness is due to a X-linked rcessive while blue eyes are due to an autosomal recessive. Two brown-eyed persons with normal vision produce a blue-eyed color-blind son. What are the genotypes of the parents?

THANKs]]> 1 on 1 Tutoring Fri, 24 Apr 2009 16:08:10 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/what-are-the-genotypes-t67.htm#173 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/what-are-the-genotypes-t67.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f66/biochemistry-charge-on-a-polypeptide-t66.htm greenpak07 Hi, Thanks a bunch, I was wondering if you had any familarity with the calculating the charge on an amino acid? I'm a bit confused on how to calculate the net charge on a peptide. I get that when the pH is greater than the ionizable groups (lysine, arginine, glutamate, asparagine), the base form predominates and that there will be either a neutral charge or a - charge. But how do you know when you will have a neutral plus or negative charge (i.e.) when do you know that there will be a ... 1 on 1 Tutoring Thu, 29 Jan 2009 19:20:33 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f66/biochemistry-charge-on-a-polypeptide-t66.htm#169 http://science-ed.fullsubject.com/1-on-1-tutoring-f66/biochemistry-charge-on-a-polypeptide-t66.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f66/biochemistry-ph-buffers-t65.htm greenpak07 I'm a bit confused as to how to solve this problem.

1. Calculate the amount of 0.5 M lactic acid/1.0M lactate you would need to make a 3.3M M100 mL solution with the pH of 4.80 and the pKa is 3. 9.

First you would use the equation .5M x (Y)= 3.3 M x (100mL)

that gives you 660 mL which is impossible since you have to make it 100mL?

Thanks,
Gina]]> 1 on 1 Tutoring Thu, 15 Jan 2009 23:26:15 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f66/biochemistry-ph-buffers-t65.htm#167 http://science-ed.fullsubject.com/1-on-1-tutoring-f66/biochemistry-ph-buffers-t65.htm http://science-ed.fullsubject.com/human-anatomy-and-physiology-f27/terminology-game-t41.htm Alla
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What type of muscle tissue is found in the heart?]]> Human Anatomy and Physiology Thu, 26 Jun 2008 22:24:41 GMT http://science-ed.fullsubject.com/human-anatomy-and-physiology-f27/terminology-game-t41.htm#109 http://science-ed.fullsubject.com/human-anatomy-and-physiology-f27/terminology-game-t41.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f4/evolution-question-t64.htm dpmelvin Three Pacific islands, X, Y and Z, appeared approximately 5 million years ago as a result of volcanic activity. Islands X and Y have about the same area, and island Z is about 10 times larger than X and Y combined. X is closer to the nearest mainland than either Y or Z, which are both approximately equidistant from the mainland. Assume that each island was colonized independently of the others. How would you expect the natural faunas and floras of the three islands to differ? Explain. Describe ... 1 on 1 Tutoring Sun, 14 Dec 2008 17:04:33 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f4/evolution-question-t64.htm#162 http://science-ed.fullsubject.com/1-on-1-tutoring-f4/evolution-question-t64.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/gene-order-transfer-t63.htm greenpak07 Hey guys! I really need help with this problem and I have no one else to ask as everyone is gone for the day....I was hoping someone could help me out and explain it to me because I've been told the answer but I don't really understand how to approach the problem. Thanks in advance and Have a terrific weekend! In a mating of Hfr pro+ trp+ ala+ tet-s x F- pro- trp- ala- gly+ tet-r, cells are interrupted after several minutes and plated on the media containing various amino acids ... 1 on 1 Tutoring Sun, 07 Dec 2008 10:39:28 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/gene-order-transfer-t63.htm#160 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/gene-order-transfer-t63.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/pedigree-type-question-t62.htm greenpak07 Hi Guys, I'm a bit confused how to approach pedigree questions like the following. I feel that either of the answers could be correct and I don't know which one to rule out. These are some sample exam questions that I don't have answers to. A female affected with Klutzki’s disease mates with an unaffected male and has an affected daughter. Which type(s) of inheritance can be ruled out for Klutzki’s disease? A.Autosomal dominant B.X-linked dominant C.Autosomal recessive D.X-linked ... 1 on 1 Tutoring Tue, 02 Dec 2008 16:59:06 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/pedigree-type-question-t62.htm#158 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/pedigree-type-question-t62.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/gene-mapping-question-t61.htm Alla greenpak07 wrote:Hi guys, I'm new here, I found this site while trying to look for help with bio questions, and it helped me. I'm just trying to learn gene mapping and I'm a bit confused as to why the answer this question is D. I don't understand how they determined which gene is in the middle,I just don't get it, I'd really appreciate it if someone could help work it through so I'd understand how they got that answer to be wrong and the other one's to be right. For someone who's just learned ... 1 on 1 Tutoring Sun, 30 Nov 2008 20:17:24 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/gene-mapping-question-t61.htm#155 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/gene-mapping-question-t61.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetic-problem-help-t60.htm jennifer9280 A geneticist discovered an obese mouse in his laboratory colony. he breeds this obese mouse with a normal mouse. all the F1 mice from this cross are normal in size. when he interbreeds two F1 mice, eight of the F2 mice are normal in size and two are obese. the geneticist then intercrosses two of his obese mice, and he finds that all of the progeny from this cross are obese. these results lead the geneticist to conclude that obesity in mice results from a recessive allele. A second geneticist ... 1 on 1 Tutoring Sat, 29 Nov 2008 16:05:49 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetic-problem-help-t60.htm#151 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetic-problem-help-t60.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/revision-questions-help-t59.htm chousta Hey. just afew revision questions i need help with because i dont have any answers. in bold are my answers 1) Sex linkage of a gene a) means that the phenotype is confined to one sex b) involves only the Y chromosome c) implies that the gene is on one of the sex chromosomes d) means that colour blindness occurs only in women e) is another term for sex limited d 2) Loci A and B are unlinked. Two double heterozygotes are crossed. The proportion of offspring with ... 1 on 1 Tutoring Sat, 23 Aug 2008 03:55:00 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/revision-questions-help-t59.htm#149 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/revision-questions-help-t59.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/few-genetic-questions-t57.htm Igal0s Hey, hope I could get some help with those basic questions for my upcoming test. Thanks 1. When dealing with a dihybrid cross, say I am told that two genes are 22cM apart and that a cross of oossXOoSs (testcross) was done. In such cross, if I am right, I should predict an equal, 25% proportion of the 4 different phenotypes. My question is, If i am asked what number, out of the 100 from the cross will exhibit a particular phenotype (aka 1 of the four, 25%), how do I account for the 22cM ... 1 on 1 Tutoring Sun, 17 Aug 2008 15:26:29 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/few-genetic-questions-t57.htm#140 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/few-genetic-questions-t57.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetic-crosses-t58.htm Alla MonkeyNacho wrote:i have a question that i've now been trying to think of for a couple of hours, but my text book only explains half of what i need. For this, (Corn kernels), the phenotypes and genotypes are: Su = Starchy, su = sugary, R = Purple, r = yellow The question is: A cross between two pure breeding (Homozygous) corn plants was set up to produce an F1 generation. Complete: PARENTS: Phenotype - ........ X ......... Genotpye - .........X .......... what ... 1 on 1 Tutoring Mon, 18 Aug 2008 21:18:44 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetic-crosses-t58.htm#145 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetic-crosses-t58.htm http://science-ed.fullsubject.com/discussion-f52/pharmaceutical-discovery-techniques-t56.htm scott I'm not sure if i have posted this in the right section but here goes... I'm doing a project on rhodopsin which in part requires me to explain how the structural and functional aspects can be used for developing or discovering new pharmaceutical products. i have found loads of stuff on structure based approaches such as homology modeling and ligand based approaches but i can never find any information on how the function of this GPCR could be used to identify new drugs for other GPCRs. ... Discussion Sun, 17 Aug 2008 12:03:43 GMT http://science-ed.fullsubject.com/discussion-f52/pharmaceutical-discovery-techniques-t56.htm#139 http://science-ed.fullsubject.com/discussion-f52/pharmaceutical-discovery-techniques-t56.htm http://science-ed.fullsubject.com/essay-review-f50/gm-crops-poster-t55.htm chousta "Genetically modified organisms already help us to reduce pesticide use on cotton crops, and grow better canola crops. The benefits are greater than any risk". This is meant to be in the form of a poster, thus I will employ headings. GM crops are currently grown by 8.5 million farmers in 21 countries, where 90% of the farmers using the GM technology live in developing countries. Five countries (USA, Argentina, Brazil, Canada and China) are growing nearly 95% of the total area ... Essay Review Sun, 17 Aug 2008 08:46:42 GMT http://science-ed.fullsubject.com/essay-review-f50/gm-crops-poster-t55.htm#138 http://science-ed.fullsubject.com/essay-review-f50/gm-crops-poster-t55.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/loci-question-t54.htm chousta flowers so one or other is required for pigment. Both loci have recessive alleles, a and b
respectively, which are defective.
In the offspring of a cross between two doubly heterozygous individuals
what phenotypes are expected and in what ratios?

Include genotypes of all individuals and gametes, using
correct genetic notation.]]> 1 on 1 Tutoring Sun, 17 Aug 2008 08:32:18 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/loci-question-t54.htm#137 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/loci-question-t54.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/operon-question-t53.htm Alla AlwaysLearning wrote: Question: An operon contains a repressor, a promoter sequence, an operator and a structural gene. The structural gene is responsible for the metabolism of molecule X. From the data below determine whether the operon is inducible or repressible. Then assign A,B,C and D to the four parts of the operon. Explain your rationale- FE= functional enzyme, NFE= nonfunctional enzyme, NE = no enzyme Genotype X present X absent A+B+C+D+ FE NE A-B+C+D+ FE FE A+B-C+D+ ... 1 on 1 Tutoring Thu, 07 Aug 2008 16:13:13 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/operon-question-t53.htm#136 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/operon-question-t53.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetics-silkworms-t52.htm Alla chousta wrote:hey all. im havin some troubles with a question from an exercise, and it doesn't have a solution, but ive made an attempt, hoping its right and someone could lead me the right way for the next part of it. Question: a) I addressed this question talking about each phenotype rather than 2 variables? anwys. genetic hypothesis 1: A single pair of alleles determine haemolymph colour, the allele producing yellow colour being dominant (since yellow is most ... 1 on 1 Tutoring Wed, 06 Aug 2008 18:59:14 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetics-silkworms-t52.htm#135 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/genetics-silkworms-t52.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/unordered-tetrads-t51.htm Alla AlwaysLearning wrote:I'm struggling on this too, please help. My deadline is tomorrow. In a chlamydomonas cross AB X ab the following unordered asci were recovered (10points) AB Ab aB ab 44 AB ab AB ab 85 Ab aB Ab aB 23 a. Label each class of Tetrads (P,NP.TT) b. Determine the distance between the two genes Thank you so much. First, you need to understand what P, NP and TT stand for. P – parental ditype – is the same as parents. In this case parents ... 1 on 1 Tutoring Wed, 06 Aug 2008 16:28:14 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/unordered-tetrads-t51.htm#134 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/unordered-tetrads-t51.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/mendelian-genetic-problems-t50.htm Alla AlwaysLearning wrote:Hi, You seem helpful from your posts. Please could you help with my question? White leghorn chickens have normal pigment genes, but are white because of a dominant color inhibiting gene (I). White Plymouth rock chickens are white because they are homozygous for a recessive loss of pigmentation gene (c) that behaves much like the coat color gene (C/c) in mice. The genes are unlinked and neither is sex-linked. A true-breeding white leghorn (II CC) is crossed ... 1 on 1 Tutoring Wed, 06 Aug 2008 16:01:08 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/mendelian-genetic-problems-t50.htm#133 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/mendelian-genetic-problems-t50.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/test-cross-help-t47.htm ph0bolus My professor once again gave me problems to work out where in which I have no idea on how to start out on them...Can someone lead me in the right direction please? 1. A three-point testcross was made in corn. The results and a partial recombination analysis are shown in the following display, which is typical of three-point testcrosses (p = purple leaves, + = green; v = virus- resistant seedlings, + = sensitive; b = brown midriff to seed, + = plain). a. Determine which genes ... 1 on 1 Tutoring Sat, 28 Jun 2008 14:21:02 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/test-cross-help-t47.htm#115 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/test-cross-help-t47.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f15/are-antibiotics-too-dangerous-to-be-used-t48.htm icedoxx Hi, Im doing an essay on Antibiotics. The essay question is 'Are Antibiotics too dangerous to be used?' There are 3 sections to the essay: Biological Relevance Impact of the issue Management Ive started my essay and have talked about the types of antibiotics: 1. Bactericidals I have said how they work. They inhibit peptidoglycan synthesis and some inhibit protien synethsis. i have written about how they do this ect. 2. Bacteriostatics I am stuck on how Bacteriostatic ... 1 on 1 Tutoring Sun, 29 Jun 2008 02:51:16 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f15/are-antibiotics-too-dangerous-to-be-used-t48.htm#118 http://science-ed.fullsubject.com/1-on-1-tutoring-f15/are-antibiotics-too-dangerous-to-be-used-t48.htm http://science-ed.fullsubject.com/zoology-f25/terminology-game-t40.htm Alla
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Cats belong to which family?]]> Zoology Thu, 26 Jun 2008 22:21:35 GMT http://science-ed.fullsubject.com/zoology-f25/terminology-game-t40.htm#108 http://science-ed.fullsubject.com/zoology-f25/terminology-game-t40.htm http://science-ed.fullsubject.com/essay-review-f17/are-antibiotics-and-vaccines-too-dangerous-to-be-used-t49.htm icedoxx Stage 2 Biology - Summative Human Awareness Essay - By Druva Mitra Are Antibiotics and Vaccines too dangerous to be used? Antibiotics are drugs used to treat infections caused by bacteria. The human body houses many types of bacteria that live peacefully and even some that help the body to function. Some types of bacteria are dangerous and affect the body’s ability to function normally. There are many well known infections that are caused by bacteria; some include tuberculosis, salmonella, ... Essay Review Sun, 29 Jun 2008 06:23:04 GMT http://science-ed.fullsubject.com/essay-review-f17/are-antibiotics-and-vaccines-too-dangerous-to-be-used-t49.htm#122 http://science-ed.fullsubject.com/essay-review-f17/are-antibiotics-and-vaccines-too-dangerous-to-be-used-t49.htm http://science-ed.fullsubject.com/discussion-f65/terminology-game-t45.htm Alla
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What is the name of the smallest alkane?]]> Discussion Thu, 26 Jun 2008 22:37:09 GMT http://science-ed.fullsubject.com/discussion-f65/terminology-game-t45.htm#113 http://science-ed.fullsubject.com/discussion-f65/terminology-game-t45.htm http://science-ed.fullsubject.com/discussion-f63/terminology-game-t44.htm Alla
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What is the name of the smallest atom?]]> Discussion Thu, 26 Jun 2008 22:33:29 GMT http://science-ed.fullsubject.com/discussion-f63/terminology-game-t44.htm#112 http://science-ed.fullsubject.com/discussion-f63/terminology-game-t44.htm http://science-ed.fullsubject.com/virology-f32/terminology-game-t43.htm Alla
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Which virus causes chickenpox?]]> Virology Thu, 26 Jun 2008 22:28:45 GMT http://science-ed.fullsubject.com/virology-f32/terminology-game-t43.htm#111 http://science-ed.fullsubject.com/virology-f32/terminology-game-t43.htm http://science-ed.fullsubject.com/discussion-f60/terminology-game-t39.htm Alla
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Totipotent cells can be located in what tissues?]]> Discussion Thu, 26 Jun 2008 22:19:23 GMT http://science-ed.fullsubject.com/discussion-f60/terminology-game-t39.htm#107 http://science-ed.fullsubject.com/discussion-f60/terminology-game-t39.htm http://science-ed.fullsubject.com/discussion-f3/terminology-game-t38.htm Alla
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What is tomato? Is it a vegetable, a fruit or a berry?]]> Discussion Thu, 26 Jun 2008 22:15:48 GMT http://science-ed.fullsubject.com/discussion-f3/terminology-game-t38.htm#106 http://science-ed.fullsubject.com/discussion-f3/terminology-game-t38.htm http://science-ed.fullsubject.com/discussion-f57/terminology-game-t37.htm Alla
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What is the general name of the pathways that relay information from hormones to nucleus?]]> Discussion Thu, 26 Jun 2008 22:11:47 GMT http://science-ed.fullsubject.com/discussion-f57/terminology-game-t37.htm#105 http://science-ed.fullsubject.com/discussion-f57/terminology-game-t37.htm http://science-ed.fullsubject.com/discussion-f55/terminology-game-t36.htm Alla
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What is the full name of the natural genetic engineer of plants?]]> Discussion Thu, 26 Jun 2008 22:09:41 GMT http://science-ed.fullsubject.com/discussion-f55/terminology-game-t36.htm#104 http://science-ed.fullsubject.com/discussion-f55/terminology-game-t36.htm http://science-ed.fullsubject.com/discussion-f52/terminology-game-t35.htm Alla
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Gene replacement can be achieved by which method?]]> Discussion Thu, 26 Jun 2008 22:07:05 GMT http://science-ed.fullsubject.com/discussion-f52/terminology-game-t35.htm#103 http://science-ed.fullsubject.com/discussion-f52/terminology-game-t35.htm http://science-ed.fullsubject.com/discussion-f49/terminology-game-t34.htm Alla
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If all progeny genotypes are Aa, what where genotype(s) of parents? Who was homozygous, heterozygous, or hemizygous?]]> Discussion Thu, 26 Jun 2008 22:03:41 GMT http://science-ed.fullsubject.com/discussion-f49/terminology-game-t34.htm#102 http://science-ed.fullsubject.com/discussion-f49/terminology-game-t34.htm http://science-ed.fullsubject.com/discussion-f46/terminology-game-t33.htm Alla
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What amino acid is encoded by start codon?]]> Discussion Thu, 26 Jun 2008 22:00:48 GMT http://science-ed.fullsubject.com/discussion-f46/terminology-game-t33.htm#101 http://science-ed.fullsubject.com/discussion-f46/terminology-game-t33.htm http://science-ed.fullsubject.com/discussion-f43/terminology-game-t32.htm Alla
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Hospital acquired infections are called _________.]]> Discussion Thu, 26 Jun 2008 21:57:06 GMT http://science-ed.fullsubject.com/discussion-f43/terminology-game-t32.htm#100 http://science-ed.fullsubject.com/discussion-f43/terminology-game-t32.htm http://science-ed.fullsubject.com/discussion-f16/terminology-game-t31.htm Alla
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What is the common test to differentiate Staph from Strep? (include test results!)]]> Discussion Thu, 26 Jun 2008 21:54:57 GMT http://science-ed.fullsubject.com/discussion-f16/terminology-game-t31.htm#99 http://science-ed.fullsubject.com/discussion-f16/terminology-game-t31.htm http://science-ed.fullsubject.com/discussion-f5/terminology-game-t30.htm Alla
Answer a question correctly and ask the next one!

DNA can be found in which organelles? (There are 3 of them!)]]> Discussion Thu, 26 Jun 2008 21:50:20 GMT http://science-ed.fullsubject.com/discussion-f5/terminology-game-t30.htm#98 http://science-ed.fullsubject.com/discussion-f5/terminology-game-t30.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f45/question-about-mrna-t29.htm Alla vicereine wrote:The piece of genetic information removed from an mRNA strand after translation is called a(n)_________. a) codon b) anti-codon c) termination codon d) exon e) intron ok if it said transcription I know it would be the introns are removed, but what is removed after translation? Is it the termination codon (since all components come apart at the end)? Or is this a typo? I ask because I've found some mistakes in my math lessonbook (I'm doing correspondence). It takes ... 1 on 1 Tutoring Thu, 26 Jun 2008 21:37:11 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f45/question-about-mrna-t29.htm#97 http://science-ed.fullsubject.com/1-on-1-tutoring-f45/question-about-mrna-t29.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/mendelian-genetic-problems-t28.htm Alla Ph0BoLuS wrote:My instructor gave me some problems to help study for the quiz on Monday, but i have no idea how to go about solving them.. 1) In martians, Gene 1 is determining eye shape (A-star eyes; a- square eyes) and Gene 2 is coding for presence or absence of tail hairs (B-hairy tail; b-smooth tail). True- breed star eyed individual with smooth tail marries another true-breed square-eyed individual with hairy tail and all of their childred have star eyes and hairy tailes. If mendelian ... 1 on 1 Tutoring Thu, 12 Jun 2008 20:34:30 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/mendelian-genetic-problems-t28.htm#96 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/mendelian-genetic-problems-t28.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/tricky-question-t27.htm georgina_009 I have this qn that dosent seem to give me enough info to work it out (though I suppose it does and I just cant do it)

-94,075 babies born over a period of time. Then were diagnosed as achondroplastic dwarfs, an autosomal dominant trait showing full penetrance. Only two dwarfs had a dwarf parent. What is the mutation frequency in the gametes? Assume all mutations occured in the gametes.

Im not sure what to do.
Thanks for any help]]> 1 on 1 Tutoring Tue, 27 May 2008 03:20:36 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/tricky-question-t27.htm#93 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/tricky-question-t27.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/sickle-cell-anemia-t26.htm georgina_009 I've done some answers to this so could you check them and help with the last one? Sickle cell anemia is an example of how fitness depends on environmental cond. In malaria prone places Hb^A Hb^S have advantage over normal. But Hb^S Hb^S usually die. The relative fitness (w) of them in Nigeria: wild type - 0.87 Hb^A Hb^S - 1.0 Hb^S Hb^S 0.05 a) What is the relationship between w and selection co efficient? b) What is the selection coefficient (s) for each genotype? c) ... 1 on 1 Tutoring Sun, 18 May 2008 06:14:11 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/sickle-cell-anemia-t26.htm#86 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/sickle-cell-anemia-t26.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/hardy-weinberg-equilibrium-t24.htm georgina_009 Thanks for your help with restriction mapping i eventually managed to figure out what i did wrong in that last one and used how you did the easier one to map it. I just wanted know if you could tell me how to do/ tell me if i'm right for these qns: There are only two alleles for a particular gene in a pop. The frequency of heterozygotes is 20% Assuming hardy weinberg equilibrium calculate the allelic frequencies in this pop. Haemophilia A is a rare reccesive sex linked trait. ... 1 on 1 Tutoring Mon, 12 May 2008 03:30:01 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/hardy-weinberg-equilibrium-t24.htm#77 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/hardy-weinberg-equilibrium-t24.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/frequencies-t25.htm georgina_009 Hi Alla, I'm sure you're sick of helping me by now but what do you make of this qn? -Dunkers are a secluded group originally from rhineland germany before settling in pennsylvania USA during 18th century. Since then they have remained secluded in marriages and customs. The frequency of ABO blood types found in the Dunkers compared to the surrounding American pop and present day rhinelanders is: Group - no. people tested-Blood frequencies: A......AB......B...........O Dunkers...228...........................................0.61...0.02....0.04....0.33 Rhinelanders....3036..................................0.45....0.05.....0.10.....0.40 eastern ... 1 on 1 Tutoring Sun, 18 May 2008 05:38:14 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/frequencies-t25.htm#85 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/frequencies-t25.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/plasmids-restriction-enzyme-question-t22.htm georgina_009 Sorry to overload you with qns but this is another thing I cant understand: Plasmid pUNE92 has been digested with BamHI and HindIII restriction enzymes in various combos. the following DNA fragments sizes were seen: BamHI - 4.0 + 2.0 kb HindIII- 6.0 kb BamHI + HindIII - 3.0, 2.0 1.0 kb a. What is size of the plasmid? my answer - 6kb b. How many sites are cut by each enzyme? - my answer - Bam - 2, Hin - 1, Bam Hind - 3? c. This part Im not sure how to do - Draw a restriction ... 1 on 1 Tutoring Tue, 06 May 2008 23:52:59 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/plasmids-restriction-enzyme-question-t22.htm#65 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/plasmids-restriction-enzyme-question-t22.htm http://science-ed.fullsubject.com/1-on-1-tutoring-f48/lac-operon-t23.htm georgina_009 Sorry again for the millions of qns but Im doing quite badly in this subject so I need loads of help! Could you just check my answer for this qn? A lacI mutation leads to repressor not able to bind to operator at 42 degrees. At 37 deg. the lacI repressor is same as wild type. Do you expect to see B-galactosidase activity under these conditions?: a) LacI - 37 deg - lactose absent - activity - (my answer) no b)LacI - 37deg - lac present - activity yes C) lacI - 42 deg. - lac absent ... 1 on 1 Tutoring Wed, 07 May 2008 02:29:21 GMT http://science-ed.fullsubject.com/1-on-1-tutoring-f48/lac-operon-t23.htm#66 http://science-ed.fullsubject.com/1-on-1-tutoring-f48/lac-operon-t23.htm