00:02
There.
00:03
What we have here is a karyotype.
00:09
And a karyotype shows all of the chromosomes of an organism paired up with their homologue.
00:16
So we have the homologous pairs shown here.
00:19
So that means for each of these numbered chromosomes, we actually have two, the two homologous chromosomes for each number.
00:27
So that means, since there are two complete sets, that this organism that we see here is diploid.
00:45
Since it is diploid, that means it has two sets of chromosomes.
00:50
A little redundant here.
00:58
All right.
00:59
The total number of chromosomes, since we see that there are a total of 20 pairs, there's 19 somatic cells and then the sex cells, or the sex chromosomes.
01:13
So the 19 chromosomes times 2 is 38 plus the two sex chromosomes gives us 40 total chromosomes...