Which of the following populations has violated the...

Name: Problem 3, Chapter 19: Biology for AP Courses
Uploaded: 2019-08-17T13:50:26-08:00
Duration: 36 s
Channel: Sisi Gao
Description: Which of the following populations has violated the conditions of Hardy-Weinberg Equilibrium? a. an infinitely large population b. a population in which the allele frequencies do not change over time c. a population in which the Hardy-Weinberg equation is equal to 1 d. a population undergoing natural selection

Which of the following populations has violated the conditions of Hardy-Weinberg Equilibrium? a. an infinitely large population b. a population in which the allele frequencies do not change over time c. a population in which the Hardy-Weinberg equation is equal to 1 d. a population undergoing natural selection

Which of the following populations has violated the conditions of Hardy-Weinberg Equilibrium?
a. an infinitely large population
b. a population in which the allele frequencies do not change over time
c. a population in which the Hardy-Weinberg equation is equal to 1
d. a population undergoing natural selection

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Key Concepts

Natural Selection

Natural selection is an evolutionary force whereby individuals with advantageous traits are more likely to survive and reproduce, thereby altering allele frequencies over time. Its action directly violates one of the critical assumptions of Hardy-Weinberg Equilibrium—namely, the absence of selective pressures—thus leading to departures from the expected genetic distribution.

Hardy-Weinberg Equilibrium

This is a fundamental principle in population genetics that predicts allele and genotype frequencies will remain constant from generation to generation when a population is isolated from evolutionary influences. It serves as a null model to help detect when evolutionary forces are acting on a population.

Assumptions of Hardy-Weinberg Equilibrium

The equilibrium model relies on several key assumptions: a very large (theoretically infinite) population size, no mutation, no migration, random mating, and no natural selection. When any of these conditions are violated, the allele and genotype frequencies can change, leading to evolutionary shifts.

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