Trait Variation

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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Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice

• The hawks eat more dark mice than light mice because the dark mice taste better

• The hawks eat more light mice than dark mice because they can see the light mice more easily

• The hawks eat more dark mice than light mice because they can see the dark mice more easily

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Why did the dark peppered moth have an increase in its population once the Industrial Revolution started?

• The white moths started to die off

• The darker moths survived better because they blended into the color of the darkened trees and so were able to pass on their traits to offspring

• The white moths turned dark

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NGSS.MS-LS4-4

There is a species of rabbit found in Alaska that is white, while a species of rabbit found in South Carolina is brown. Which statement best explains why rabbits native to different places vary in color?

• Rabbits move to different habitats according to their color.

• Rabbits change their colors on purpose to blend in with the habitat.

• Rabbits select mates of different colors in order to have different colored offspring.

• Rabbits of colors that blend in with the environment are more likely to survive and reproduce.

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NGSS.MS-LS4-4

What is the most likely reason that the members of this species of moth resemble the tree bark?

• Over generations, the moths migrated until they found a good place to hide.

• Over generations, the color of a moth is determined by the color of the tree where the eggs are laid.

• Over generations, moths that could hide on the tree bark were not eaten as often as those that could not hide.

• Over generations, the moths change colors depending on the color of the tree they land on

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NGSS.MS-LS4-2

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One species of bird with a certain beak shape evolved over time into several species of birds with different shaped beaks. The new species of birds with similar beaks tended to live on the same islands. What is the best explanation for this?

• Certain beak shapes help the birds obtain different food.

• Certain beak shapes help the birds hide from predators.

• Certain beak shapes improve mating opportunities.

• Certain beak shapes improve sensory abilities.

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NGSS.MS-LS2-1

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Which feature of a rose helps it grow without being eaten by large animals?

• flowers with bright colors

• sharp thorns

• small seeds

• deep roots

anything you can observe about an organism, including its color, size, or the way it looks and acts

• investigate

• organism

• trait

• observe

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Which of the following best describes trait variation?

• Differences in physical appearance among individuals of the same species

• The process of natural selection

• The ability of an organism to adapt to its environment

• The genetic makeup of an organism

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What is the primary cause of trait variation within a population?

• Environmental changes

• Genetic mutations

• Dietary differences

• Social interactions

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