Does either the mother or father have dimples

Since Manny's dad also has dimples, it was pretty much a surefire outcome. Since dimples are a dominant trait, only one parent needs to have them. If you or your partner has dimples, there is a 50% chance your baby will have them.

Explanation:

Dimples are a highly inheritable trait. ... “A dominant trait is one that you only need one gene copy (from your mother or father) in order to get the trait,” says Dana Bressette, a molecular geneticist and university genetics instructor

geologic time scale (for gradpoint) =)