00:01
In this question, we're told that we're working with two different plant genes, one for petal color or flower color.
00:12
And you can be blue, which is dominant, or white, which is recessive.
00:27
And we're looking at stamen shape, which could be round, which is dominant, or oval, which is recessive.
00:52
And we're told that in the parental generation, a blue oval plant, homozygous, is crossed with a homozygous white round plant.
01:21
So in our f1 generation, we're going to end up with all heterozygotes.
01:32
Since we have all homozygotes to begin with that are opposite, all of our f1 generation will be heterozygous.
01:43
And then we're told that one of these offspring from the f1 is crossed with a plant that's homozygous and white.
01:54
So let's cross one of our f1 offspring.
02:01
So it's homozygous for white oval.
02:10
So we have this homozygous recessive cross happening here.
02:16
And we're also told that these two traits are linked.
02:25
That means they're found on the same chromosome and that they are 10 map units apart.
02:42
That means that there's a 10 % recombination frequency between these two alleles.
03:02
That's only because each map unit is equal to 1 % of likelihood of recombination to occur...