Multiple Choice
In population genetics, which process directly produces gene flow between populations and can change allelic frequencies?
21. Population Genetics
Allelic Frequency Changes
Multiple Choice
Which of the following is an example of natural selection?
A
A neutral mutation is carried from generation to generation
B
A rabbit migrated to a new location and brought new alleles to the endogenous rabbit population
C
A mutation causes a finch to develop a stronger beak, which makes it more likely to grow, survive, and reproduce.
D
One allele becomes fixed in a population due to random genetic drift over time.
Verified step by step guidance1
Understand the concept of natural selection: Natural selection is a process where organisms better adapted to their environment tend to survive and produce more offspring. It involves differential survival and reproduction due to variations in traits.
Analyze the options given: Evaluate each scenario to determine if it involves differential survival and reproduction based on advantageous traits.
Option 1: A neutral mutation is carried from generation to generation. Neutral mutations do not affect an organism's ability to survive or reproduce, so this is not an example of natural selection.
Option 2: A rabbit migrated to a new location and brought new alleles to the endogenous rabbit population. This describes gene flow, not natural selection, as it involves the movement of alleles between populations.
Option 3: A mutation causes a finch to develop a stronger beak, which makes it more likely to grow, survive, and reproduce. This is an example of natural selection, as the mutation provides a survival advantage, leading to increased reproduction.
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