0:00
Hi.
00:01
So in this question it is asked about the mechanism which can keep the two frogs separate that produce an offspring which failed to develop and hatch.
00:11
So let's start with the first option.
00:14
So the post -diagotic barrier.
00:18
So the post -diagotic barrier which is called reduced hybrid viability.
00:26
So what is post -zygotic barrier? it is a mechanism that blocks reproduction after zygote formation.
00:38
So after zygote formation, if the reproduction is blocked, so this won't be beneficial in keeping the frogs separate because it will result in an offspring which will not be able to survive.
00:55
So therefore post -zygotic barrier will not work in this case and it is called reduced hybrid viability so yes hybrid viability will be reduced but this option since it is post -zygotic barrier so this will be incorrect now the b option so post -zygotic barrier called hybrid breakdown so hybrid breakdown it actually occurs after after f2 generation of crosses between different two different species or subspecies.
01:42
So this will also not help because the hybrid breakdown, it results in the deviation of the two species.
01:53
So this is not the case.
01:55
We have to keep the frogs separate...