Asked by Tyson Landenberger on Apr 23, 2024
Verified
Which of the following would likely increase the likelihood of fixing a beneficial allele in a population of finite size?
A) a higher starting frequency to decrease likelihood of drift
B) a larger excess fitness to increase selection for the beneficial allele
C) a larger population size because selection will be greater in a larger population
D) all of the above
E) none of the above
Fixing Beneficial Allele
The process by which a beneficial genetic variation becomes established, or fixed, in a population, often leading to evolutionary advantages.
Starting Frequency
Refers to the initial proportion or occurrence rate of a particular genetic variant or allele within a population at the beginning of a specified period.
Excess Fitness
The additional reproductive success of individuals with a certain genotype compared to the average reproductive success in the population.
- Acquire an understanding of the subtle differences and complex aspects of genetic variation, with considerations on the impacts of migration, mutation occurrences, and selection pressures.
Verified Answer
CW
courtney williams6 days ago
Final Answer :
D
Explanation :
All the options listed contribute to increasing the likelihood of fixing a beneficial allele in a population. A higher starting frequency reduces the impact of genetic drift, a larger excess fitness increases the selection pressure favoring the beneficial allele, and a larger population size reduces the relative impact of genetic drift, allowing selection to more effectively promote the allele's fixation.
Learning Objectives
- Acquire an understanding of the subtle differences and complex aspects of genetic variation, with considerations on the impacts of migration, mutation occurrences, and selection pressures.