Take the 2-minute tour ×
Biology Stack Exchange is a question and answer site for biology researchers, academics, and students. It's 100% free, no registration required.

I am reading this review. In the first part, the author introduces Standing Genetic Variation, described as:

STANDING GENETIC VARIATION Allelic variation that is currently segregating within a population; as opposed to alleles that appear by new mutation events

Does it mean that in adaptation the allelic variation is already present (not created by mutations) and in adaptation it prevails over the others?

Thanks

share|improve this question

1 Answer 1

up vote 2 down vote accepted

Standing genetic variation is when there is more than one allele at locus in the population at the time-point in question. When an allele goes to fixation there is no standing genetic variation at the locus until new mutations occur. Loci where alleles are not fixed are described as having standing genetic variation.

"Standing genetic variation: the presence of more than one allele at a locus in a population."

from Barrett and Schluter 2007

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.