natural selection

Where the better adapted organisms survive to pass traits along to offspring.

• evolution

• natural selection

• extinction

• artificial selection

Why are advantageous traits more likely to be passed onto offspring?

• because they are more likely to survive and reproduce

• because they come from dominant alleles

• because they come from recessive alleles

• because the trait is an acquired phenotype

Do organisms "decide" to evolve and change?

• Yes, they need to know they need to change in order to evolve

• No, they change because of natural selection

Almost all adaptations started off as?

• selective breeding

• physiological

• structural

• a mutation

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

If a new trait DOES help an organism survive, what may happen to it?

• It dies and its DNA is not passed on

• it survives and its D NA is passed on

• it changes its traits to adapt and survive

If a new trait DOES NOT help an organism survive, what may happen to it?

• It dies and its DNA is not passed on

• It survives and its DNA is passed on

• It changes its traits to adapt and survive

What happens to new traits that HELP organisms survive over time?

• They become MORE COMMON

• They become LESS COMMON

• They are EQUALLY Common

Mutations are a change in what?

• DNA

• tRNA

• protein

• mRNA

The differences among a species, like different bird beaks, are called

• genes

• variations

• traits

• theories