Case Study-The Case of Desiree's Baby: The Genetic and Evolution of Human Skin Color
Questions
1. Each parent produces eight different types of gametes. which can combine in 64 different ways. Complete the following table:
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# dark skin alleles in genotype
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0
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1
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2
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3
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4
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5
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6
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Phenotype: Skin color
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,
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Phenotypic ratio: # offspring/64
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2. How many of these 64 possible offspring have skin that is darker than their parents?
3. Each of these three genes has two alleles. Are the dark skin alleles dominant to the light skin alleles?
4. There are more than 7 shades of skin color. Can you offer an explanation?
5. Use this model of skin color inheritance and the information provided in the short story to develop possible genotypes for each of the following characters: Monsieur and Madame Aubigny, Armand Aubigny, Desiree's mother and father, Desiree, and Desiree's baby.