Which of the following is not required for a behavioral trait to evolve by natural selection?
A) In each individual, the form of the behavior is determined entirely by genes.
B) The behavior varies among individuals.
C) An individual's reproductive success depends in part on how the behavior is performed.
D) Some component of the behavior is genetically inherited.

Question

Quizplus · Accepted Answer

For a behavioral trait to evolve by natural selection, it does not need to be determined entirely by genes. While genetic inheritance (D) is necessary, behaviors can also be influenced by environmental factors and learning. Variability among individuals (B) and a connection between the behavior and reproductive success (C) are also essential for natural selection to act on a trait.

Which of the Following Is Not Required for a Behavioral