00:02
We have this thing called genetic variation.
00:04
I'm going to abbreviate that with gv, genetic variation.
00:08
And what this means is just differences within our dna from other people.
00:12
So when we have a population that has lots of genetic variation, we're going to see people that are usually looking different than us.
00:19
For example, it could be somebody who has blue eyes compared to somebody who has brown eyes or in this case using the color black.
00:33
And so we know that we have lots of genetic variation throughout the world because not everybody looks the same.
00:39
We have people with different eye color, hair color, hair texture, skin color, height differences, weight differences, structure differences, and all this is going to be genetic variation.
00:50
And so when we have a population, those who have lots of genetic variation are going to be much more likely to survive than people with less genetic variation.
01:00
Because we know that as the environment around us changes, that typically people need to as well...