mogul.

Over time, certain physical traits makes one's looks more appealing.

Like coloured eyes,

Okay, maybe not that colour but you get what I mean.

Or dimples,

Gaspard! =D

But what you didn't know is that having blue eyes or dimples are actually 'mutations'.

Having anything other than brown eyes means that there's been a mutation in your genes. Originally, all humans had brown eyes. But some thousand years ago, somebody's genes mutated and caused them to have blue eyes. Which technically means that everyone with blue eyes have a common ancestor.

Dimples on the other hand, is due to a variation in one of our facial muscles. Meaning that people with dimples have a muscle in their face that decided being like everyone else was boring and that changing it's structure would be fun.