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.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.