Natural Selection

Match the following terms with their definitions

• A permanent change in the DNA

• Adaptation

• Any variation that makes an organism better able to survive

• Evolution

• An inherited trait that makes and individual different

• Variation

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

• Mutation

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

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

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

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

• Evolution
• Natural Selection
• Extinction
• Artifical 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.

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

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

Survival of the Fittest and Evolution were proposed by what scientist?

• Charles Darwin
• Albert Einstein
• Steven Hawking
• Isaac Newton

Evolution typically happens...

• in a few weeks
• over millions of years
• never
• in 100 years

These moths are all the same species. The differences between their wings is an example of ________________

• Natural Selection
• Variation
• Homeostasis
• Extinction