00:02
Hi there.
00:03
This question is asking us about myosis of a human cell.
00:09
So we know that a human cell has a 2n number, in other words, a diploid number of 46 chromosomes.
00:27
During the interface, the beginning of meiosis, where dna is copied, each of these chromosomes, which started off as a single chromosome, duplicates itself.
00:42
And it becomes a single chromosome composed of two chromatids, joined together at the center by that centromere.
00:56
All right, so these 46 chromosomes, if they're made up of two chromatids each, we're going to have 92 chromatids, because that's 46 chromosomes made up of two chromatids each.
01:16
So 92 chromatids.
01:17
That's what we're starting, meiosis with.
01:22
So we'll start with our 92 chromatids and we will go through meiosis 1...