Question

What explains the biological variation between human populations today? Explain why different groups of people share certain physical traits that make them different from others. In addition, provide an example of one of these traits.

a. Genetic diversity; Evolutionary adaptations to local environments
b. Geographic isolation; Development of distinct physical characteristics
c. Cultural practices; Influence on diet and lifestyle
d. Shared ancestry; Inherited traits such as lactose tolerance

Answer 1

Human populations exhibit biological variation due to genetic diversity and evolutionary adaptations. Shared ancestry and inherited traits contribute to physical differences between different groups of people.

Step-by-step explanation:

Human populations today exhibit biological variation due to a combination of factors such as genetic diversity and evolutionary adaptations to local environments. Different groups of people share certain physical traits as a result of their shared ancestry and inherited traits. An example of such a trait is lactose tolerance, which is inherited and allows certain populations to digest lactose, a sugar found in milk.