Natural Selection and Comparative Anatomy Review

Match the following terms with their definitions

• a change in a species DNA over time because of natural selection

• Variation

• A permanent change in the DNA

• Adaptation

• Any variation that makes an organism better able to survive

• Mutation

• An inherited trait that makes and individual different

• Evolution

Tags

CCSS.L.6.4A

CCSS.RI.6.4

Mutations are a change in what?

• DNA

• RNA

• protein

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

• natural selection

• mutation

• camouflage

• adaptation

Tags

CCSS.RI.5.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

CCSS.RI.9-10.5

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

• genes.
• variations.
• traits.
• theories.

Tags

CCSS.RI.5.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

CCSS.RI.9-10.5

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

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

Tags

CCSS.RI.6.2

When nature "selects" a variation, that means that the trait:

• Gets passed along from generation to generation

• Causes the population to shrink

• Has brought about a new species

• Helps prey escape predators

Tags

CCSS.RI.6.4

When is a trait most likely to be passed on to the next generation?

• When it serves no purpose

• When it becomes an advantage to the organism's survival

• When it gives the organism a lot of water

• When it prevents the organism from finding a mate

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.

In the phrase "survival of the fittest," the term "fittest" refers to:

• The best-adapted organisms

• The biggest organisms

• The smartest organisms

• The fastest organisms

Tags

CCSS.L.6.4A

CCSS.RI.6.4

CCSS.RL.6.4

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 DNA is passed on

• It changes its traits to adapt and survive