Amplify Natural Selection

Blue jays with thinner beaks can easily reach and eat the seeds inside pinecones. If their environment changes to have only seeds in pinecones, which of the following blue jay populations will most likely survive?

• Populations 1 and 2 will most likely survive.

• Populations 2 and 3 will most likely survive.

• Only Population 2 will survive because it is the only population with variation.

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NGSS.MS-LS4-4

NGSS.MS-LS2-4

NGSS.MS-LS2-1

If this trend continued, which color ostrilope would become more common in the population over time?

• Blue 1

• Blue 4

• Yellow 7

• Yellow 10

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NGSS.MS-LS4-4

If this trend continued, which color ostrilopes would become LESS common in the population over time?

• Blue

• Yellow

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NGSS.MS-LS4-4

NGSS.MS-LS3-1

Claim: Ostrilopes with adaptive traits are more likely to reproduce than ostrilopes with non-adaptive traits. Did we decide this claim was CORRECT or INCORRECT?

• Correct

• Incorrect

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NGSS.MS-LS4-4

What is natural selection?

• the process through which populations of living organisms adapt and change.

• Parents choose which genes their offspring have when each individual is born

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NGSS.MS-LS4-4

Why were the newts with the poison gene able to live longer than those newts without the poison gene?

• the newts with the poison gene were able to live longer than the other newts

• the newts with the poison live longer because they are able to reproduce more than the other newts

• both claims are correct

• neither claim is correct

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NGSS.MS-LS4-4

NGSS.MS-LS3-1

A new trait will only become more common in a population if it is _______________________________

• harmful to predators

• adaptive

• recessive

• dominant

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NGSS.MS-LS4-4

Which location has guppies (孔雀鱼) with medium spot size as the adaptive trait?

• Population in Brazil

• Population in Venezuela

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NGSS.MS-LS4-4

What change in the environment caused the evolution? 岩石越小，越适合斑点小的鱼生存。

• The amount of large riverbed rocks increased.

• The amount of small riverbed rocks increased.

• The amount of riverbed rocks did not change.

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NGSS.MS-LS4-4

NGSS.MS-LS2-4

NGSS.MS-LS2-1

How did the cactuses (仙人掌) evolve from 1970 to 2015?

• Medium spine size became an adaptive trait.

• Medium spine size became a non-adaptive trait.

• Small and large spine sizes became adaptive traits.

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NGSS.MS-LS4-4

NGSS.MS-LS1-5