Natural Selection

Differences between members of the same species are called

• predators

• selections

• traits

• variations

A slight change in a rabbit's ability to hear its predators better and help it survive is

• an adaptation

• an acquired trait

• a vestigial structure

• an isolation

Natural selection is affected by ___________ or traits that are different in members of the same species.

• camouflage

• variations

• ancestors

• evolution

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

• They are more likely to survive and reproduce

• They come from recessive alleles

• They come from dominant ancestors

• The trait is an acquired phenotype

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

• genes

• traits

• variations

• theories

Which organisms are most likely to survive?

• the best adapted

• the strongest

• the fastest

• the most tamed

What describes the process of species with advantageous traits that help the organism survive and reproduce?

• mutation

• natural selection

• adaptation

• genetic engineering

What is an example of a trait that is an adaptation for cold climate but not for warm climate?

• long claws

• camoflauge

• poisonous chemicals

• thick fur and fat

The theory of ___________ states that species evolve slowly over a relatively slow time.

• behavioral

• evolution

• speciation

• adaptation

Why do beaks of the same bird species look different?

• The birds chose to mutate to survive

• The birds adapted over time through natural selection

• Humans bred them to make the changes

• Through non-random variation