00:01
The question asks, during which phase of mitosis are duplicated chromosomes present? now, what we have here is basically interface, g2 phase shown.
00:19
So retosis starts actually with prophase, so mitosis would actually be right here.
00:33
Okay? now, when are duplicated chromosomes present? so in g2, we start with 2n.
00:45
Or, i apologize, we start with 4n because the somatic cells are generally deployed to begin with.
00:57
So when they're duplicated, the cell has 4n chromosomes in it.
01:03
But that is part of interface but that's helpful because going into mitosis which is the first phase is prophase right here we have 4n in here we still have 4n because the chromosomes have condensed but they have not split yet so each chromosome one from the mother and the father side has its sister chromatid attached to its still.
01:37
Even in the metaphase plate, you still have four end chromosomes because each chromatid that was duplicated, it's still attached to its sister chromatid...