Bio Final Prep - Darwinian

• Use and disuse
• Inheritance of acquired characteristics

• 1) Members of a population vary in their traits
• 2) Traits are inherited from parents to offspring
• 3) All species produce more offspring than the environment can support
• 4) Many of the offspring do not survive

different survival and reproduction of individuals within a population

Similarity resulting from common ancestry

• anatomical resemblances that represent variations on a structural theme present in a common ancestor
• (phalanges, metacarpals)

Remnants of features that served important tunctions in the organism's ancestors

• structures that serve the same function in different species, but are NOT derived from a common ancestral sructure
• (wings, aerodynamic sharks/dolphins)