00:02
So, here we have to give the difference between the directional, directional and stabilizing, stabilizing selection.
00:18
Here this is directional selection.
00:21
So, we have to give the difference between these two and next part of the question is asking to give an example that how natural selection added in increasing genetic variety rather than decreasing it.
00:39
So, let us start here with the directional selection first.
00:43
So, here this can be understood this favors, favors here the directional selection this favors one extreme phenotype, one extreme phenotype that is causing a shift in trait, shift in trait frequency in one direction, in one direction.
01:13
So, that is what called directional selection.
01:16
Now the stabilizing favors, this favors intermediate phenotypes, intermediate phenotypes that is narrowing the distribution of, narrowing the distribution of traits.
01:44
So, let us see what are the example here for the directional selection.
01:49
For the directional selection the example is like dark colored, dark colored moth, moths in polluted area, polluted area...