PS4+F09 - Bio D137 Human and Eukaryotic Genetics Prob Set 4...

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Bio D137 Human and Eukaryotic Genetics J.L.Marsh F'09 Prob Set 4 due Oct, 20 1 1. The father of Spock, first officer on the starship Enterprise, is Vulcan. Spock’s mother came from earth. A Vulcan has pointed ears (allele P), adrenals absent (allele A), and heart on the right side (allele R). These 3 loci are linked on the same autosomal chromosome. All these alleles are dominant to earth alleles. The alleles appear as follows: P 25mu A 16 R If Mr. spock marries an earth woman, what proportion of their children will have (assume no interference): a) Vulcan Phenotype for all three characteristics? b) Earth phenotype for all three characteristics? c) Vulcan ears and heart but earth adrenals? d) Vulcan ears but earth heart and adrenal? Explain the calculations that allow you to arrive at the answers. 2. You have two pure breeding strains of rabbits. One strain has brown spots and straight ears (bbSS). The other strain is pure black (no spots) with floppy ears (BBss). Your boss wants you to find out whether the two genes responsible for these traits assort independently or are linked. You cross the two pure breeding strains. Note: B_=Black fur, S_=Straight ears. A. What are the phenotypic ratios of the F1 generation if these genes assort independently? B. What is the phenotypic ratio of the F1 generation if these genes are closely linked? C. Is the F1 generation informative in telling you whether these genes are closely
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This note was uploaded on 10/27/2009 for the course BIO SCI 05580 taught by Professor Marsh during the Fall '09 term at UC Irvine.

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PS4+F09 - Bio D137 Human and Eukaryotic Genetics Prob Set 4...

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