Mind-Blowing Facts About Genetics That Doctors Wish We All Knew

Having five fingers on each hand is a trait controlled by a recessive gene, meaning both parents need to pass on this gene for their child to have it. On the other hand, having six fingers, a condition known as polydactyly, is controlled by a dominant gene, meaning only one parent needs to pass it on for their child to have it.

Polydactyly can occur as an isolated trait or be associated with other conditions, including recessive or chromosomal conditions. Understanding these genetic factors helps us appreciate the diversity of traits found in humans and the complex interactions that shape our physical characteristics.