00:01
All right, so this question, we have guinea pigs that are either pink, if they are, have the dominant allele, or they will be blue.
00:13
So to start off, pink guinea pigs will be big bee, big b, or big b, little b, and blue guinea pigs will be homozygous recessive.
00:27
So it will be little b, little b.
00:29
However, there's a twist in here.
00:31
There's another gene e that will either allow the b gene to be expressed or not.
00:41
So i'll change color to help us.
00:48
I'll say color expressed.
00:52
These guinea pigs will have either big e, big e, or they will be big e little e.
01:00
And then yellow is another color where they have two littlies.
01:07
So it doesn't matter what letters or what genes they have for b.
01:12
If they have two little e's, they will be yellow.
01:15
So our goal, we want to figure out what percent of the offspring will have blue coats when we have two heterozygous individuals for both genes.
01:25
So our heterozygous individuals will be, i'll use a different color, both of them will be big b little b, big e, e, little e.
01:44
So we're going to cross the genes separately.
01:50
So we'll do our big or sorry, we'll do our pink or blue coat first.
01:58
So both parents are big b, little b...