00:01
In order to determine if the answer to this question is true or false, let's go through and draw sort of a generic cell that's undergoing meiosis.
00:15
So if we draw our cell, we want to draw it as a diploid cell, so two in, and we're going to give it two chromosomes just to make things easier.
00:28
We can label the paternal chromosomes in, red, and let's label the maternal ones in blue.
00:42
And since our chromosome number is two, we want to have two sets of four chromatids.
00:51
So let's draw the paternal lineage first.
00:54
So there's one chromatid and its replicate and another.
00:59
This group of four is called a homologue.
01:02
Each gamete will receive one chromatid and there should be four gametes produced from this meiotic event.
01:13
So that's the paternal lineage.
01:15
Now let's do the maternal lineage.
01:17
Same way.
01:18
One chromatid and its replicate and the second chromatid and its replicate.
01:24
This is called a homologue.
01:27
Okay, so we can start by trying to understand what happens in meiosis one.
01:33
Meiosis 1 is basically using the law of segregation from mendel to state that in diploid organisms, they pass randomly selected alleles for a trait to its offspring.
01:51
What this means is that the offspring randomly receive one allele from each parent.
01:58
So if we draw the results of meiosis 1, remember meiosis 1 produces two cells.
02:09
Each cell has divided up these xs randomly.
02:16
So what we're going to do is take one set of xs and split them between this cell and this cell...