Components of Natural Selection

Movement of alleles from one population to another due to migrating individuals is called

• Gene Flow

• Behavioral isolation

• Immigration

• Adaptation

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Which factor(s) allows evolution to occur?

• Small populations

• Genetic drift

• Mutations

• All of the above

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According to the theory of evolution, differences between species may be the result of

• the disuse of body structures

• the transmission of acquired traits

• Natural Selection

• Mutagens

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According to Hardy-Weinberg which of the following will prevent/slow the process of evolution?

• Mutations and gene flow

• No mutation and no migration

• Small population and genetic drift

• Natural selection and gene flow

Which of the following is NOT a component of natural selection

• Competition for food and space

• Variation among species

• Acquiring traits over an organism’s lifetime

• Survival and reproduction

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In which of the following types of societies would genetic drift have the least likelihood of causing rapid evolution?

• A group of 12 isolated human beings 70,000 years ago

• Japan 2013 with 180 million people.

• A community of 40 members of a religious sect who have had nothing to do with their neighbors in Pennsylvania for 8 generations

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Charles Darwin proposed that organisms produce many more offspring than can possible survive on the limited amount of resources available to them. According to Darwin, the offspring that are most likely to survive are those that

• are best adapted to the environment

• are born first and grow fastest

• are largest and most aggressive

• have no natural predators

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A group of mice becomes separated by the formation of a river. Over time, the northern mice became smaller and whiter and the southern mice became larger and browner. They are no longer able to reproduce with one another. This is an example of:

• Geographic isolation

• Speciation

• Behavioral isolation

• Geographic Isolation & Speciation

• Speciation & Behavioral Isolation

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