00:03
So if we want to know what order this gene map should be in, then we want to start by listing our different phenotypes of this generation in order from the most common to the least common, as you see that i'm doing here.
00:19
This is important because it will show us not only the non -recommonants, but also the double crossovers, both of which are going to be important.
00:28
So our top two most common, and they should be significantly more common than all the rest, are the.
00:33
Non -recognite types.
00:36
So these offspring got chromosomes from their parents with no crossing over event that happens.
00:51
So we can also call them parentals because they have parental chromosomes.
00:56
Right.
00:56
So this gives us a picture of what the parental chromosomes looked like.
01:00
Excellent.
01:00
Super useful.
01:01
But since the top two are non -recombinants, that means all the rest of these are recombinants.
01:09
So in particular, in particular, we're going to focus on the two least common because they will be double crossovers.
01:20
In a double crossover event, we have our middle gene, which sort of stays put, and the gene to either side of it is going to exchange alleles with its sister chromatid...