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Evolution Making Sense of Life

Biology

Quiz 13 :

The Origin of Species

Quiz 13 :

The Origin of Species

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A geographic barrier that only partially isolates two populations, so that gene flow is reduced but not eliminated, may lead to
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Answer:

C

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Which of the following is a barrier to gene flow that occurs before mating occurs?
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D

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Which of the following is true regarding "magic traits"?
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Answer:

A

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Why is it unusual for one species of caterpillar to feed on a wide range of plants?
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Which species concept(s) would be most useful for a conservation biologist?
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The ________ species concept cannot be used to define bacteria and archaea because organisms in these domains reproduce ________.
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Extrinsic postzygotic isolation is most likely when
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A pair of insect species inhabits the same community, but one lives on goldenrod plants and the other on autumn daisies and rarely leave their preferred type of plant. This is an example of ________ isolation, which is a ________ barrier to gene flow
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How do researchers make an initial determination about which microbes are different species using the phylogenetic species concept?
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Many butterflies in the genus Heliconius are mimetic, which means that they closely mimic the wing patterning and color of highly poisonous species even though they themselves are not poisonous. This is a benefit because many predators (such as birds) learn to avoid poisonous species by identifying their wing patterns and colors. Some closely related Heliconius species mimic different poisonous species. Although they can successfully hybridize and produce viable/fertile offspring that have high fitness in the laboratory, the hybrids are intermediate in wing patterning and color and are not good mimics. Consequently, they have low fitness in nature. This is an example of
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Which of the following would provide evidence for reinforcement?
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A river that divides a population of terrestrial salamanders could lead to
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Early classifications of the polar bear were based on
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Which species concept would assign isolated giraffe populations with little gene flow to separate species based on differences in mitochondrial DNA between the populations
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Under the biological species concept,
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Which of the following is not true regarding the accumulation of genetic differences in allopatric populations?
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How did the formation of the Isthmus of Panama influence the speciation of shrimp?
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Which of the following is not an example of horizontal gene transfer?
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Which of the following conditions is/are thought to be necessary for sympatric speciation to occur?
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An allele is experiencing positive selection when
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