00:01
Which evolutionary force occurs when individuals migrate between populations or different allele frequencies? genetic drift, gene flow, mutation, or natural selection.
00:13
So we have two populations, and they have different allele frequencies.
00:18
Let's say this one only has a single type of allele.
00:21
But this one has a few individuals with a different one.
00:25
And one of these individuals gets up and moves to this population.
00:28
And in doing so, changes the allele frequency.
00:33
First of all, a change in allele frequency means that evolution is happening.
00:41
So whatever this is, this mechanism is causing evolution of the populations.
00:46
And it's what we call gene flow.
00:50
So gene flow is caused by migration between populations, and these individuals are carrying their genes with them, and so they're carrying potentially new alleles to the new population.
01:00
And away from the old one.
01:04
The other answers here.
01:05
Genetic drift is down to chance.
01:09
So now this is the only green allele member of this population...