Homework 4 - upper bands Marker F: Columbia upper bands 2....

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BIO 325 Genetics Homework 4 This homework 4 is due Thursday, Jun. 30 Please turn in your homework to your TA (NMS 3.276) or bring it to the class Please don't try to write on this sheet! Put your answers on another sheet of paper and turn that in. 1. (4 points) Following is the result from mapping for a mutation in Columbia using SSLP markers (A ~ F; differ in lengths) in a plant Arabidopsis. To do map-based cloning mutants were crossed to Ler and obtained following mutants in F2. Where is the mutation (indicate the shortest interval as between marker X and Y)? First lane is from heterozyote (as control) and the rest of them from 10 mutants at F2. (Columbia and Ler are names of ecotypes that are polymorphic throughout genome) Marker A: Columbia lower bands Marker B: Columbia upper bands Marker C: Columbia lower bands Marker D: Columbia upper bands Marker E: Columbia
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Unformatted text preview: upper bands Marker F: Columbia upper bands 2. (2 points) At a given locus, two alleles, 1 and 2, are present in a population in Hardy-Weinberg equilibrium and no other alleles are present at appreciable frequencies. Homozygotes for allele 1 represent 36% of the population. What fraction is heterozygous? 3. (2 points) Two wild-type alleles, 1 and 2, are present in a population in Hardy-Weinberg equilibrium and together make up 90% of the allele frequency at that locus. Homozygotes for allele 1 represent 9% of the population. What fraction of the population is homozygous for allele 2? 4. (2 points) In a population of 1 million people, 100 albinos (homozygous recessives, aa) were found. How many normal (homozygous dominants, AA ) individuals will be found in the next generation under Hardy-Weinberg equilibrium (assume that the population is still 1 million)?...
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This note was uploaded on 11/07/2011 for the course BIO 325 taught by Professor Saxena during the Summer '08 term at University of Texas.

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