College Bio: Evolution

The difference in the physical traits of an individual from those of other individuals in a group is called a(n)

• change
• adaption
• species
• variation

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Over time, adaptions can lead populations to experience 

• environmental changes
• genetic changes
• geological changes
• extinction

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what did Charles Darwin observe in finch populations of the Galapagos Islands off the coast of South America?

• different species on different islands
• all species on one of the islands
• identical species on all the islands
• the same species as North America

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In natural selection, the selective agent is the

• humans
• mutations
• breeders
• environment

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All rabbits living in a particular area would be an example of a(n)

• population
• species
• fossil
• individual organism

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a bird that can easily outcompete other birds for food and that can produce many eggs has a high

• life expectancy
• mutation rate
• fitness
• adaptability

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Which of the following describes natural selection?

• it acts on genetic material directly

• it acts on existing physical traits

• it forms new traits

• it forms new genetic material

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which of the folllowing is an exammple of a vestigial structure?

• the wings of a red-tailed hawk
• the hind limbs of a house cat
• the fins of sharks
• the wings of an ostrich

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What is suggested by the anatomical similarity of different species of vertebrates?

• no evolutionary relationships between the groups

• recent common ancestry

• similar environments in the past

• evolution from a distant common ancestor

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Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

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