Is this karyotype from a male or female? how do you know ?
Also do they have down syndrome? How?

Its a male, without down syndrome

Explanation:

The fact that it's a male is indicated from the presence of the Y chromosome. In order for this man to have down syndrome, he would have had 3 chromosomes at 21, which he doesnt, meaning he doesnt have down.

the dark variety, as they are not visible on the dark tree barks

explanation:

idk why hjggjhjkhj