Viewing a single comment thread. View all comments

Furrypocketpussy t1_j4grzkl wrote

In short, yes. The quickest ways would be via a bottleneck or founder effect, like Pingelap Atoll where a largw portion of the population has a recessive form of colorblindness. But in a normal population with genetic drift and flow, this is pretty unlikely to happen

−2

CrateDane t1_j4guf3w wrote

That isn't turning a recessive allele into a dominant allele. That's turning a rare allele into a common allele.

2

Furrypocketpussy t1_j4j1nqa wrote

recessive alleles are in general rare. If you got a group of recessive homozygotes and some heterozygotes and put them on an island where there is no genetic flow or drift then you get a population where that recessive allele is widespread

1