00:01
So which of these is a post -zygotic barrier that prevents hybrids from producing offspring? hybrid gamete isolation, hybrid breakdown, increased hybrid vulnerability, or increased hybrid fertility.
00:17
Okay, so in these cases, these have to be after a zygo has formed.
00:25
Post -zygotic means fertilization has been successful.
00:29
So fertilization between the f -zero generation, the two different.
00:34
Species is successful.
00:38
So you're getting a hybrid.
00:41
Looking at the answers, if we look at d, this isn't the case.
00:45
Usually hybrids are sterile, not more fertile.
00:48
If they were more fertile, there's no indication that would prevent them from producing offspring.
00:54
Looking at the other answers, increased hybrid vulnerability.
00:58
Again, it does not indicate that the hybrids would be unable to produce offspring.
01:04
It just indicates that perhaps they are less genetically fit from the parents.
01:10
So we also have a and b.
01:14
So gamete isolation is pre -zygotic.
01:17
That would be between the two f -0 parents...