00:01
All right, so we have three examples of chromosomal abnormalities in more drosophila chromosomes.
00:10
In the first example, we have something that looks like this.
00:15
It has 1, 2, 5, 6, 7, 8.
00:21
Now, the normal sequence, as i've written here, is 1, 2, 3, 4, 5, 6, 7, 8.
00:26
And looking at the differences between these two things, we can see that something is missing right about here.
00:34
And when something is missing and it's not showing up in any other part of the same chromosome, it's a deletion.
00:40
And so what's going to happen is it's going to pair up the best it can.
00:47
But this first longer chromosome is going to end up kind of bulging like this.
00:53
And the newer chromosome is going to stay.
00:58
Straight, right? so the blue is new and the black is original.
01:09
Okay, so in the second example, it's kind of similar to three, four, four, five, six, seven, eight.
01:20
All right.
01:21
So here we can obviously tell the difference between the original and this one is there's an extra four...