Evolution and Natural Selection

Can mutations be passed down to offspring?

• Yes

• No

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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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Do organisms "decide" to evolve and change?

• Yes, they know they need to change to survive 
• No, they change because of natural selection

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

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

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Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice
• The light mice moved to a different environment

• The hawks eat more light mice than dark mice because they can see the light mice more easily
• The light mice became dark and passed on this trait to their offspring

Mutations are important because they bring about

• death of the organism in which they develop

• genetic variation needed for a population to evolve

• benefits for the individual, not for the population

• changes in genotype, but not phenotype

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The long and sharp beak of a woodpecker is an example of:

• Natural Selection
• Selective Breeding

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Domesticated dogs are an example of:

• Natural Selection
• Selective Breeding

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Why is competition important for natural selection?

• It shows which variations are more successful, allowing the organisms with those variations to survive.

• It causes organisms, regardless of which traits they have, to die out, reducing the population size.

• It causes organisms to get stronger due to having to outcompete other species.

• Competition is not important for natural selection.

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If an organism can't adapt fast enough, this might happen.

• hibernate
• stay the same
• live longer
• become extinct

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