Evolution Review

Charles Darwin’s studies of finches on the Galapagos Islands suggest that the finches’ differences in beak structure were caused by the_______________ of the finches to different environments.

• adaptations

• variations

• traits

• mutations

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A new species of finch with long beaks is introduced to an island with a limited food supply. The long beaks allow the finches to gather food more easily compared to the native finches. In 30 years, the native-finch population will ________and the long-beak finch population will _________.

• decrease and increase

• increase and decrease

• add and substract

• York and Stephens

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The process of _____________ ____________determines which individuals within a species are most likely to reproduce and pass their genes to future generations.

• selective breeding

• natural measures

• natural selection

• mutations

Organisms that survive long enough to reproduce must have favorable characteristics for their ___________________.

• traits

• cells

• fitness level

• environment

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In some species of birds, males with bright colors and long feathers are usually picked by dull-colored, female birds for mating. Based on this information there will be a _______________population of brightly colored males in future generations

• lesser

• greater

• more defined

• skinner

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A poison dart frog’s bright colors tell predators that the frog is poisonous. However, not all brightly colored frogs are poisonous. Natural Selection may favor non-poisonous, bright colored frogs because their bright colors mimic poisonous frogs so _______________avoid them.

• predators

• pray

• diseases

• rain

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A population of dark and light colored mice move into a new area that has a lot of dark colored rocks. The light mice are more easily visible to predators such as hawks. Ove time the genes of this mice population will _______________for dark-colored fur.

• decrease

• increase

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An adaptation is a trait that helps organisms to ___________and reproduce.

• survive

• make new

• die

• disease

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In the wild, rabbits breed very quickly producing many offspring in a short period of time. This is most likely because they have many __________and _______life spans.

• predators and short

• predators and long

• bunnies and short

• offspring and long

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According to Darwin, most giraffes have long necks to help them ______________in an environment with tall trees.

• develop spots

• reproduce

• survive

• become camouflaged

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