How Variation Comes About
How do differences in individuals arise?
Compare the two ways for organisms to pass genetic information to their offspring.
Changes to regulatory switches give old genes new functions.
Learn about some basic genetic components for building an eye.
Bizarre mutations in fruit flies led to the discovery of genes that guide development.
Learn about this natural source of genetic variation
Small changes to DNA can lead to big variations in traits.
Genetic variations can provide clues about common ancestry.
See how a mutated protein can affect normal cell division.