Natural & Artificial Selection Gizmo & 16.4

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Multiple Choice

Which of the following is not a characteristic of natural selection?

• More offspring are born than will survive to reproduce

• Mutations appear randomly

• Breeding pairs are chosen by humans

• Organisms that are better adapted are more likely to survive

Multiple Select

Which of the following statements is true about artificial selection? Select all that apply.

• Breeders can control which animals mate

• Breeders can control what mutations will appear in the offspring

• none of these

Multiple Choice

Studying biogeography can help scientists

• make connections between where modern species & their ancestors lived

• learn how to find contries on a map

• understand how an individual changes during its lifetime

• decide how to observe a species of animal

Multiple Choice

Darwin proposed that homologous structures are evidence of

• embryonic development

• similar adaptations

• similar functions

• shared ancestry

Multiple Choice

The wing of a bird and the wing of a grasshopper have similar functions, but they evolved independently. This is an example of

• homologous structures

• analagous structures

• vestigial structures

• homologous molecules

Multiple Choice

The DNA in yeasts, grizzly bears, centipedes, and palm trees all share

• the same sequence of bases

• the same number of genes

• the same number of chromosomes

• the same genetic code

Multiple Choice

According to recent research, a species with widely varying traits in a population

• will be less likely to survive environmental changes

• increases the chance that the species will survive environmental changes

• will overpopulate their living space

• will rapidly evolove into multiple species