00:01
Hello.
00:02
So the question given here is saying that drosophila, this is having x, y, sex determination.
00:10
Right.
00:11
So here, few of the carotypes are given here in options.
00:15
And we have to identify that which of the carotap here, this leads to female fly.
00:23
So let's see the option here.
00:25
The a1 is xxy.
00:27
B is x, x, x, x, not.
00:31
Is x y and d is saying none of these are female so let's understand this here about the drosophila that in drosophila here if we talk about the sex determination in them so these flies have either one or two x chromosomes or two sets of autosomes so what i told here either one or two x chromosomes and two sets of autosomes.
01:16
Here are the two sets of autosomes.
01:17
Here are the two sets of autosomes.
01:24
Right.
01:26
Now let's move and understand that how we will identify that it's a male or female.
01:32
So if there is one x chromosome, one x chromosome, one x.
01:38
Chromosome and two autosomes that is we can write it as 1 x and 2 a 2 a for 2 autosomes in a deployed cell this is showing the deployed cell so this will be a this fly will be a male right now if second condition here is if there are 2 x chromosomes.
02:14
Can we write like this? yes.
02:16
Okay.
02:17
So this is showing 2x chromosomes in a deployed cell and with two set of autosomes that i have told earlier.
02:27
2a.
02:28
So this is showing what? here the fly here is female.
02:34
Right.
02:36
So this 2x is 2a is showing that here the fly is female...