2026 Biology Final Review

Which of these are factors (not evidence) for evolution?

• genetic variation

• adaptation

• fossils

• overproduction

• surviving to adulthood

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Why is surviving to adulthood important for organisms in the context of Darwin's theory?

• It allows organisms to pass down those favorable traits

• It increases genetic variation

• It allows organisms to migrate to new environments

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What does Darwin's Theory suggest about the number of young produced in each generation?

• Only a few young are produced in each generation

• All young produced will survive to adulthood and reproduce

• 
  More young are produced in each generation than can survive

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What does "adaptation" refer to in Darwin's Theory of Evolution?

• The process by which species become extinct

• Any inheritable characteristic that increases an organism's ability to survive and reproduce in its environment

• The production of more young than can survive to adulthood

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Select two claims that can be made from the evidence about the decline in Adélie penguins.

• The decline is due to the increase in predators.

• 
  The decline is due to the decrease in food availability.

• The decline is due to the decrease in habitat availability.

• The decline is due to the decreased ability to camouflage.

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How do favorable traits affect an organism's chances of survival when a catastrophe occurs?

• They have no impact on survival

• They decrease the likelihood of survival

• They make it more likely that at least some individuals will survive

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According to Darwin

• all offspring survive

• no offspring survive

• not all offspring survive

• only the strongest offspring survive

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According to Darwin not all offspring survive, and of those that do

• they pass on random characteristics to their offspring

• they pass on those characteristics that aid in survival to their offspring

• they do not pass on any characteristics to their offspring

• they pass on weaker characteristics to their offspring

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What does the term "fitness" refer to in Darwin's theory of evolution?

• The physical strength of an organism

• The ability of an organism to compete in sports

• How well an organism can survive and reproduce in its environment

• The speed at which an organism can move

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What causes genetic variation according to Darwin's theory?

• Climate change

• Diet and lifestyle

• Geographic isolation

• DNA mutations and sexual reproduction

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