00:02
All right, so looking at these answer choices, so first of all, a, the traits must affect the ability of the individual to reproduce.
00:13
So there must be some kind of effect on their survival fitness as well as their reproductive fitness, as those two kind of tend to go hand in hand.
00:31
For b, this is also correct.
00:34
The traits must be heritable.
00:36
As if the traits are not heritable, then it doesn't really matter.
00:38
What the phenotype or the genotype of the parents are, the offspring won't reflect that.
00:43
And therefore, it wouldn't be selected for.
00:47
The population size does not need to be large.
00:49
The trait has to have a genetic component...