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.

DNA

tRNA

protein

rRNA

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

Natural Selection

Evolution

Selective Breeding

Artificial Selection

Mutations help an organism to better survive in their environment

An organism may acquire a helpful mutation by interacting with the environment

A mutation may result in a beneficial trait that makes an organism more likely to survive and reproduce

Organisms with certain traits are more likely to win competitions for mutations

population

species

community

ecosystem

evolve

migrate

survive

mutate