Based on this information (picture) A. What is the probability that a randomly sampled individual from the population has two copies of the a allele (that is, that it has an aa genotype)? B. What is the probability that both members of a randomly sampled married couple (man and woman) are aa at the asparagus-smelling gene? C. What is the

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter13: Observing Patterns In Inherited Traits

Section: Chapter Questions

Problem 2DAA

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Question

Based on this information (picture) A. What is the probability that a randomly sampled individual from the population has two copies of the a allele (that is, that it has an aa genotype)? B. What is the probability that both members of a randomly sampled married couple (man and woman) are aa at the asparagus-smelling gene? C. What is the probability that both members of a randomly sampled married couple (man and woman) are heterozygotes at this locus (meaning that each person has one allele A and one allele a)? D. Consider the type of couple described in (c). What is the probability that the first child of such a couple also has one A allele and one a allele (is a heterozygote)? Remember that the child must receive exactly one allele from each parent.

Some people are hypersensitive to the
smell of asparagus, and can even detect
a strong odor in the urine of a person
who has recently eaten asparagus. This
trait turns out to have a simple genetic
basis. An individual with one or two
copies of the A allele at the gene (AA or
Aa genotypes) can smell asparagus in
urine, whereas a person with two copies
of the alternative "a" allele (aa
genotypes) cannot (Online Mendelian
Inheritance in Man 2019). Assume that
men and women in the population have
the same allele frequencies at the
asparagus-smelling gene and that
marriage and child production are
independent of the genotype at the
gene. In the human population, 5% of
alleles are A and 95% are a.

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