What Has Occurred When Natural Selection Shifts Allelic Frequencies Toward

question 23

Multiple Choice

What has occurred when natural selection shifts allelic frequencies toward the extremes of a range of genetic expressions for a particular trait? 

• A) directional natural selection 
• B) discontinuous natural selection 
• C) diversifying natural selection 
• D) stabilizing natural selection

---

Definitions:

Object Permanence

The comprehension that items persist in existence despite being out of sight, sound, or touch.

Psycholinguistic Theory

The view that language learning involves an interaction between environmental influences and an inborn tendency to acquire language. The emphasis is on the inborn tendency.

Sensitive Periods

Specified times in development when the brain is particularly receptive to learning certain skills or knowledge.

Language Acquisition Device

A theoretical construct in linguistics proposed by Noam Chomsky, suggesting an innate faculty that allows humans to acquire language.