00:01
In order to answer this question, let's talk about inheritance.
00:02
The gene for albinism is known to be aggressive fatal.
00:05
So in this case, the homozygous dominant and the heterogeneousigals are going to cause for normal pigmentation, while the homozygo recessive is for albinism.
00:15
In it says, in michigan, 21 people in a sample of 10 ,000, so you have a total of 10 ,000, 21 are found to have albinism.
00:30
Okay? against the other 9 ,979 are going to be normal skin, i'm going to have normal skin pigmentation.
00:39
It says, assuming hardy -weimer equilibrium, what is the allele frequency for the dominant pigmentation alien in this population? remember that according to this, p plus q is equal to 1, where p is the frequency of alis in that population that are dominant alias and q is for the aggressive if a deal.
00:53
You also have that p square plus 2 pq plus q squared is equal to 1, where p square is the frequency of homozygous domino, 2pq is a frequency for heterocygous and q is a frequency for homocygose diseases.
01:06
So in this case, you have that the frequency for albinism is 21 divided by this number here.
01:14
And the frequency for homocygo recessive is q squared.
01:16
So you have that q squared is equal to 21 divided by 10 ,000.
01:21
If you divide 21 by 10 ,000, they're going to get, you're going to get in this case here, that q square is equal to 0 .0 .0 .0 .000.
01:33
021...