Natural and Artificial Selection

Mutations are always bad

• true

• false

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NGSS.MS-LS3-1

An environment becomes colder. Some of the rabbits which live there have a mutation that causes their fur to be longer and thicker allowing them to stay warmer. This is an example of a

• positive mutation

• negative mutation

• neutral mutation

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NGSS.MS-LS1-5

NGSS.MS-LS3-1

NGSS.MS-LS4-4

A species of frog lives in the rainforest. One of the frogs is born with a mutation which causes it's skin to be completely white. This is an example of a

• positive mutation

• negative mutation

• neutral mutation

Tags

NGSS.MS-LS3-1

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.

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NGSS.MS-LS4-4

Almost all adaptations started off as?

• selective breeding
• physiological
• structural
• mutation

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NGSS.MS-LS3-1

NGSS.MS-LS4-4

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

• natural selection

• mutation

• camouflage

• adaptation

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NGSS.HS-LS4-4

NGSS.HS-LS4-5

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

Tags

NGSS.MS-LS4-4

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

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

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

The more genetic variation a population has,

the more likely it is for some individuals to

• evolve

• migrate

• survive

• mutate

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NGSS.MS-LS4-4