How does genetic variation work?

Explanation:

Genetic variation is when two parents give off their traits to their child. That's genetic variation, when you have different traits. Hope that helps ;)

So genetic variation has to do with the difference in DNA among organisms

Explanation: For example, if you were to compare a human with blue eyes and one with brown eyes, those individuals have genetic variation between them.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;