00:01
What is the probability that these parents will produce a particular offspring? okay, so the parents, we have this, so heterozygous at three locii, crossed with this.
00:13
So heterozygous at a, homozygous dominant at b, heterozygous at c.
00:19
And the outcome we're looking at is homozygous dominant at a, heterozygous at b, homozygous dominant at c.
00:28
Okay.
00:30
Now, to answer this, question, the really important point you need to remember is that genes segregate independently.
00:38
So if i wanted, i could just focus on this and say, okay, what is the chance that the offspring will be homozygous dominant at this locus? and i could look at the parents, and i could say, okay, we have a heterozygous cross, and when you cross these, it's a one in four chance of getting homozygous dominant.
01:01
So this is going to be 104, but the offspring will have this genotype at this locus.
01:10
And that applies also to the second gene.
01:14
So i have a cross between a heterozygote and a homozygous dominant.
01:20
What are the outcomes from that cross? well, 50 % of the offspring will be homozygous dominance...