00:01
So in the first case scenario which is given in the diagram, so this is the cell and these are the chromosomes.
00:11
So this is one pair of homologous chromosome which is present.
00:15
Now when this cell undergoes meiosis 1 and if there is a non -disjunction at meiosis 1, then in that case what will happen is that the two homologous pairs.
00:32
Of chromosomes will not separate.
00:34
So in that case one of the cells will receive both the homologous pair of chromosome.
00:41
On the other hand, the other cell will receive none of this pair of the chromosomes.
00:47
So ideally, each cell should receive one of the homologous pairs of chromosomes in each cell.
00:55
But in this case, due to non -disjunction, one cell will receive both the chromosomes.
01:00
On the other hand, the other will receive none.
01:03
Then when the meiosis 2 occurs, so in that case, the first cell will have one chromatid and the other cell will have the other chromatid...