Being able to digest lactose after the age of four is common / uncommon (circle one) around the world. 77% of European Americans and 14% of African Americans have the LCT gene on Chromosome 2, which codes to produce the enzyme lactase, which allows people to digest lactose in adulthood. 1. What forces of evolution are at work? Tick all that apply. Mutation Natural Selection Genetic Drift Gene Flow
Being able to digest lactose after the age of four is common / uncommon (circle one) around the world. 77% of European Americans and 14% of African Americans have the LCT gene on Chromosome 2, which codes to produce the enzyme lactase, which allows people to digest lactose in adulthood. 1. What forces of evolution are at work? Tick all that apply. Mutation Natural Selection Genetic Drift Gene Flow
Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter26: Human Evolution
Section: Chapter Questions
Problem 3CT
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Transcribed Image Text:Being able to digest lactose after the age of four is common / uncommon (circle one) around
the world. 77% of European Americans and 14% of African Americans have the LCT gene on
Chromosome 2, which codes to produce the enzyme lactase, which allows people to digest
lactose in adulthood.
1. What forces of evolution are at work? Tick all that apply.
Mutation
Natural Selection
Genetic Drift
Gene Flow
Is natural selection involved? If it is, then how, specifically is it operating?
2.
3.
Your answer should include all of the forces' of evolution that you identified as being employed
(above). Put this information into a narrative to explain how new traits are introduced, how
individuals are selected (if present), and how alleles in the population shift over time.
Explain how the forces of evolution shift allele frequencies in the population over time.
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