Melanin Unit Review

Individuals with favorable traits survive, reproduce, and pass their traits onto their offspring. This is called

• Mutation

• Evolution

• Natural Selection

• Adaptation

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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 light mice than dark mice because they can see the light mice more easily

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

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

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Since the 1800s humans have stopped burning coal, and the trees have returned to their original color. Which moth will be more successful in this environment?

• Dark moth

• Light moth

• Both will be equally successful

• Neither will be successful

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

• Because organisms with those traits are more likely to survive and reproduce.

• Because they come from recessive alleles.

• Because they come from dominant alleles.

• Because the trait is an acquired phenotype.

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How many kids did the mother and father from the first generation have?

• 2

• 4

• 5

• 6

Is this trait (the shaded individuals) dominant or recessive? Mark only one oval.

• dominant

• recessive

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In this pedigree, the shading represents people in the family with dark hair while the unshaded represents blondes. Is dark hair controlled by a dominant or recessive allele? Mark only one oval.

• dominant

• recessive

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In the Punnett square, what is the probability for white fur?

• 0%

• 50%

• 25%

• 75%

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DNA has a (a)   structure. Mark only one oval.

• double helix

• ring

• single stranded

• chain

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DNA holds the coding for. Mark only one oval.

• carbohydrates

• proteins

• lipids

• sugars

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