Problem Set 4 S09

Problem Set 4 S09 - Problem Set 4 Chapters 14-16 Genetics:...

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Problem Set 4 BILD1 / Spring 2009 Chapters 14-16 Dr. Kiger 1 Genetics: Mendel’s Laws 1) Organisms with different genotypes can have the same phenotype! Is this statement true or false? Explain why. 2) (a) In a diploid organism, how many different alleles at a single locus can that organism possess? (b) How many different alleles of a particular gene can be found in a population of organisms? (c) If there are 4 alleles that can occupy a single locus in a diploid organism, how many total different genotypes are possible? Example of 4 alleles : A, a, å, a (d) Continuing with part (c), suppose that one of the four alleles is dominant over all the others. Further suppose that the other three alleles produce identical phenotypes either when mixed with each other, or when homozygous. Assign a phenotype to the genotypes you produced in part (c). How many different phenotypes are possible? 3) The gene specifying blood group determinants can occur in three alleles: A, B and O. A and B are codominant, while O is recessive. If Luke Skywalker’s mother was blood type A and Luke himself was type B, what blood type(s) – if any – would DarthVader have to be to unequivocally rule him out as Luke’s natural father? 4) Cystic fibrosis is inherited as a simple autosomal recessive in humans. If a woman who is a carrier marries a man who is normal and not carrying the trait, what percent of their children would be expected to have the
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This note was uploaded on 08/28/2009 for the course BIO 10 taught by Professor Towb during the Fall '08 term at CSU Northridge.

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Problem Set 4 S09 - Problem Set 4 Chapters 14-16 Genetics:...

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