Genetic drift has its strongest effect in a population with:
Correct answer: C. A small effective size
- A. A very large effective size
- B. High artificial selection only
- C. A small effective size
- D. Complete random mating only
Explanation
Genetic drift is random change in allele frequency and is strongest when the effective population size is small. Chance sampling can then cause alleles to become fixed or lost over generations.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Animal Breeding and Genetics
Covers genes, chromosomes, inheritance, genetic variation, mutations, heritability and quantitative traits in livestock. It also includes selection methods, breeding systems, inbreeding, crossbreeding, heterosis and evaluation of traits such as growth, milk yield, fertility and disease resistance.
Practise Animal Breeding and Genetics
60 free Animal Breeding and Genetics MCQs from Veterinary Science, 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 Veterinary Science questions like this
Veterinary Science is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Animal Breeding and Genetics questions
Which mating system introduces unrelated animals from another population to increase genetic variation?
Inbreeding depression is most commonly expressed as reduced:
The maximum observable recombination frequency between two loci is generally:
Which statement best describes a selection index in animal breeding?
In animal breeding, selection intensity is best defined as the:
Dominance variance in a quantitative trait results mainly from: