00:01
For this particular question, we are looking at genetics where we're told that one parent is true breeding blue in color and another parent is true breeding white.
00:10
Now, it's important to know that they are true breeding because true breeding tells us that all of the alleles are the same at each gene.
00:20
So if we're looking at one gene, it might mean that they have only dominant alleles or only recessive alleles.
00:27
Or if you're looking at two genes, then that would mean that, you know, they could have only dominant at one and only recessive at the other, or they could have all dominant or all recessive, but they can only give one type of allele at each gene.
00:43
So we're actually given a couple different examples where the male is blue and the female is white, and then one where the female is blue and the male is white.
00:53
But in both cases, we see that all of the f1 offspring are blue, in color.
01:02
Now, this is important because it tells us that blue is the dominant trait.
01:08
So if we were to write this with the letter b representing the alleles, then i would see that, okay, if you're blue in color, you have to have at least one dominant allele for blue, but if you're the recessive white, then you have to have only recessive alleles.
01:33
And then this parent who is true breeding blue, it means that they can only have one type of allele.
01:40
And since they have to have a dominant, it means that all their all their alleles are dominant.
01:44
And then when we look at the f1 generation, we see that they're this dominant blue color, and that's because they get a dominant b from the first parent.
01:54
But the other parent can only give recessive alleles.
01:58
So all of the offspring have to get a recessive allele from that parent...