00:01
A mother is a carrier for colorblindness and the dad is colorblind.
00:05
Please draw a punnet square and indicate the probability of a child who has color blindness.
00:10
Before we write this punnet square, let's make xc as the allele for color blindness.
00:19
So now let's start the punnet square.
00:23
As we know, the mom is a carrier of color blindness, which means she has one regular allele and then one color blindness allele.
00:34
The dad has colorblindness, so he only has the color blindness, and then obviously a y.
00:42
So let's draw it out.
00:44
X, x, c, x, y, x, x, c, and then x, c, y...