Which of the following best describes the impact of purifying selection?
Correct answer: D. It removes variation from the population.
- A. It increases frequency of an allele.
- B. It is the same as disruptive selection.
- C. It increases genetic diversity.
- D. It removes variation from the population.
Explanation
The statement that best describes the impact of purifying selection is: "It removes variation from the population." Purifying selection, also known as negative or stabilizing selection, is a type of natural selection that operates to eliminate deleterious or harmful alleles from a population. It favors the preservation of advantageous alleles and the removal of deleterious ones, leading to a reduction in genetic diversity within the population over time. Essentially, purifying selection acts to "purify" the gene pool by removing harmful genetic variants and maintaining or increasing the prevalence of beneficial ones.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Chromosomes questions
The 23rd pair of chromosomes in man is:
The ultimate source of all the change is
Chromosomes that have different alleles of a given gene at locus is called?
The doubling of DNA material occurs in the process of
The term 'chromosome' was coined by:
Who proposed the chromosomal theory of inheritance for the first time?