Question

can you guys explain what's homologous chromosomes and how is it related to the normal chromosomes?

Answer 1

Okay.

Take a look at this chart, here:
http://www.riverbendds.org/downkary.gif

Do you see how we have 23 pairs of chromosomes?
(That's 46 chromosomes in all.)

And they're all normal chromosomes, really.

Now, take a look at the chart,
and I'd like you to look at group #1.
ONLY group #1.

In group #1, we have two chromosomes.

One of those chromosomes is from your mother.
And one of those chromosomes is from your father.

Do you see how both of those chromosomes, in group #1, are about the same size?
And their centromeres (the centers) are in the same position, on the chromosomes.

That is why the chromosomes in group #1 are HOMOLOGOUS chromosomes.

"Homologous" is a kind of relationship that two chromosomes have, with one another.

If two chromosomes (one from your mom, and one from your dad) are about the same size and length,
then that means that they are "homologous chromosomes."

They are homologous with one another.

And it works the same way, for every other group.

Do you get it?

Answer 2

Oh and I'm sorry, try to ignore the fact that there seems to be 3 chromosomes in group #21.

I didn't pick the best chart to use as an example.

Answer 3

yeah. that's okay :) THANK YOU!!

Answer 4

Alrighty. You're welcome. =)