This Chapter Discussed Speciation by Genetic Divergence Following Geographic Isolation,which

question 31

Essay

This chapter discussed speciation by genetic divergence following geographic isolation,which is expected to lead to reduced gene flow,a process known as allopatric speciation.A more controversial form of speciation is the genetic divergence of populations without physical isolation,a process known as sympatric speciation.Can you envision a mechanism or process that would permit two coexisting populations of the same species to begin to diverge without being isolated from one another?

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Definitions:

Galatea Effect

A phenomenon where individuals' high self-expectations lead to improved performance.

Self-Expectations

The standards or goals an individual sets for themselves, which influence their behavior and effort in various aspects of life.

Expectancy Theory

A psychological theory that describes the motivational force behind choices individuals make, depending on their expectations of the outcome and the value they place on that outcome.

Self-Motivation

The ability to initiate and continue actions or tasks without external encouragement or pressure.