Now, let's take a moment to look at the human condition.
The human chromosome condition. Recall that we have
homologous chromosomes. 23 pairs. They look like this.
We have one that came from the mother.
It has a grey one here that would illustrate the
replication. But let's just look at the red one for now.
And then one from the father. So that results in 46
chromosomes. The ones that are all highlighted in green
here are called autosomes. Those are all involved in
general gene expression. Then there is two
that are non-homologous. They are the sex chromosomes.
The sex chromosomes are the X and the Y.
You're probably familiar with those. But they are
non-homologous because they don't exactly match up.
The Y is tiny. It doesn't have much on it. And the X
is much larger. I don't know. Maybe it has more
complexity and that explains some of the differences
between men and women. Anyway, moving forward,
during meiosis we end up splitting each of these
chromosomes into individual eggs or the gametes.
And so we have one copy of each. Sometimes you end up
with an X and sometimes you end up with a Y,
if it's in spermatogenesis or the generation of sperm.
And in females, we will always end up with X. So,