Evolution Review

How are mutations a mechanism for evolution?

• They allow a species to decide to change their DNA and change their allele frequency
• They are a random change in the DNA of a species that changes their allele frequency
• Mutations are not real.

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Individuals who are considered fit, have:

• Stronger genes
• Fewer mutations
• More food
• More offspring

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What factors affect natural selection?

• Overproduction, competition, and genetic variation
• competition
• overproduction and genetic variation
• genetic variation and niche

Which of the three graphs shows stabilizing selection?

• A
• B
• C

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Which species’ DNA is most similar to the DNA of the toothed whale? 

• Hippopotamus 
• Baleen Whale
• Grazing Mammals
• Camels

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Lamarck’s theory of evolution includes the concept that new traits appear because:

• natural variation and natural selection.
• use and disuse
• the environment is unchanged
• the natural variations are present within a population.

Where is the T.rex and frog's common ancestor?

• Point A
• Point B
• Point C
• Point D

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Which two species are most related?

• B&C
• A&B
• A&C
• C&B

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Sources of variations include _______ and ______?

• sexual reproduction, mutations
• asexual reproduction, mutations
• biological evolution, genetics
• biological evolution, genetics

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Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

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