Mutations

What are mutations? - A permanent change in the DNA sequence of a gene.

How can DNA become mutated? Mutations can be inherited. If a parent has a mutation on his/her DNA, the mutation is passed to his/her children. Mutations can be acquired. This happen when environmental agents damage DNA (ex. radiation) or when mistakes occur as a cell copies its DNA.

A Normal Gene

A Mutated Gene

Types of Mutations

Mutations… happen. They happen with great regularity. Almost all mutations are neutral. Of the remainder, whether they are beneficial or harmful depends on the circumstances.

Harmful Human Mutations Huntington’s Disease Werewolf Syndrome or Congenital Generalized Hypertrichosis Fragile X Syndrome

Animal Mutations Naked Mole Rat White Alligator