Chapter 1. Genetic Drift

Introduction

Animation

Question 1.1

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Correct.
Incorrect.

Question 1.2

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Correct.
Incorrect.

Question 1.3

Suppose a neutral allele arises in a small population of organisms. Which of the following is/are most likely to occur over subsequent generations? Select all that apply.

UxXCdiuIDfYB7iao The allele could increase in frequency and reach fixation.

UxXCdiuIDfYB7iao The allele could completely disappear (go extinct).

YZqRursQbQ4R6IcA The allele could remain in the gene pool indefinitely (neither fixation nor extinction).

Correct.
Incorrect.

Question 1.4

Suppose a neutral allele arises in a large population of organisms. Which of the following is/are most likely to occur over subsequent generations? Select all that apply.

YZqRursQbQ4R6IcA The allele could increase in frequency and reach fixation.

YZqRursQbQ4R6IcA The allele could completely disappear (go extinct).

UxXCdiuIDfYB7iao The allele could remain in the gene pool indefinitely (neither fixation nor extinction).

Correct.
Incorrect.

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