Asked by Pawan Kumar on Jul 06, 2024
Verified
When a natural disaster kills off a large proportion of the population, resulting in a severe reduction in the gene pool, it is called
A) natural selection.
B) bottleneck effect.
C) founder effect.
D) gene flow.
E) directional selection.
Bottleneck Effect
Type of genetic drift; occurs when a majority of genotypes are prevented from participating in the production of the next generation as a result of a natural disaster or human interference.
Gene Pool
The total collection of genes within a population, representing the variety of genetic information available for traits and potential evolution.
- Acknowledge the impact of genetic variation in populations on evolution and analyze how natural selection, genetic drift, and gene flow facilitate evolutionary transformations.
Verified Answer
AC
Andrew CrossJul 06, 2024
Final Answer :
B
Explanation :
The situation described in the question is the bottleneck effect, where a significant event such as a natural disaster significantly reduces the size of a population, resulting in a reduced gene pool. Natural selection, directional selection, and gene flow all impact the gene pool in different ways but are not specific to this scenario. The founder effect occurs when a small group of individuals establishes a new population, which is not the case in this scenario.
Learning Objectives
- Acknowledge the impact of genetic variation in populations on evolution and analyze how natural selection, genetic drift, and gene flow facilitate evolutionary transformations.