A Variety of Genotypes and Phenotypes in a Population Is

question 34

Multiple Choice

A variety of genotypes and phenotypes in a population is useful because it

• A) makes life more interesting.
• B) allows the species to survive if the environment changes.
• C) means that the gene pool is constant and unchanging.
• D) makes genetic drift an unlikely occurrence.
• E) will lead to nonrandom mating.

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Definitions:

Dentate Gyrus

A part of the hippocampus in the brain involved in the formation of new memories and one of the few regions where neurogenesis (the growth of new neurons) occurs.

Neurogenesis

The process by which new neurons are formed in the brain.

Hippocampus

A major component of the brain in humans and other vertebrates, associated with memory formation and spatial navigation.

Prefrontal Cortex

A region at the front of the brain associated with complex behaviors such as decision making, planning, and moderating social behavior.