Assume that human ear length is influenced by multiple genetic and environmental factors. Suppose you measure ear length in three groups of people, in which group A consists of five unrelated people, group B consists of five siblings, and group C consists of five first cousins. a. With the assumption that the environments of all three groups are similar, which group should have the highest phenotypic variance? Explain why. b. Is it realistic to assume that the environmental variance for each group is similar? Explain your answer.

Human Heredity: Principles and Issues (MindTap Course List)
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ISBN:9781305251052
Author:Michael Cummings
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Chapter19: Population Genetics And Human Evolution
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Problem 9QP: Using the HardyWeinberg Law in Human Genetics Suppose you are monitoring the allelic and genotypic...
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Assume that human ear length is influenced by multiple genetic and
environmental factors. Suppose you measure ear length in three groups
of people, in which group A consists of five unrelated people, group B
consists of five siblings, and group C consists of five first cousins.
a. With the assumption that the environments of all three groups are
similar, which group should have the highest phenotypic variance?
Explain why.
b. Is it realistic to assume that the environmental variance for each group
is similar? Explain your answer.

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