Natural Selection Overview

Because they are more likely to survive and reproduce.

Because they come from dominant alleles.

Because they come from recessive alleles.

Because the organism knew it needed that trait, survives, and passes it on.

genes.

variations.

traits.

theories.

The individual organism decides to adapt

Mutations that give an organism an advantage in its environment

Genetic recombination during meiosis

Both mutations and genetic recombination are sources of adaptation

have the ability to interbreed. have the ability to interbreed.

acquired traits through use and disuse.

all eat the same type of food.

descended from a common ancestor.

continual increases in population size.

the actions of organisms as they use or fail to use body structures.

an unchanging local environment.

the natural variations already present within the population of organisms.

They were all the same

The beaks seemed to match the food source.

The beaks were not like any other bird beaks