Multiple Choice
A new species can arise in a single generation __________.
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23. Speciation
Introduction to Speciation
Back23. Speciation
Introduction to Speciation
- Multiple ChoiceThe Galápagos finches collected by Darwin are thought to have descended from a very small parent population. Different species of finches that are confined to only one or two islands most likely arose by __________.1140views
- Multiple ChoiceIn the case of the Lake Victoria cichlids, sympatric speciation has been shown to be driven by __________.1124views
- Multiple ChoiceIn a hybrid zone, which of the following would tend to lead to reinforcement?1538views
- Multiple ChoiceIn the Lake Victoria cichlids, what appears to be contributing to fusion of different species?1914views1rank
- Multiple ChoiceWhat is the first thing that must happen in order for speciation to occur?2183views
- Multiple ChoiceComparison of human fossils with living humans seems to show that there have been no significant physical changes in Homo sapiens in 30,000 to 50,000 years. What might an advocate of punctuated equilibrium say about this?1163views
- Multiple ChoiceAccording to the punctuated equilibrium model of evolution, __________.1613views
- Textbook Question
Define 'biological species.'
940views1rank - Textbook Question
Name the two types of speciation represented by this diagram. For each type, describe how reproductive barriers may develop between the new species.
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What distinguishes a morphospecies?
a. It has distinctive characteristics, such as size, shape, or coloration.
b. It represents a distinct branch in a phylogeny of populations.
c. It is reproductively isolated from other species.
d. It is a fossil from a distinct time in Earth history.
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Males of different species of the fruit fly Drosophila that live in the same parts of the Hawaiian Islands have different elaborate courtship rituals. These rituals involve fighting other males and making stylized movements that attract females. What type of reproductive isolation does this represent?
a. Habitat isolation
b. Temporal isolation
c. Behavioral isolation
d. Gametic isolation
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Fill in the blanks in the following concept map.
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Which of the following describes vicariance?
a. Small populations coalesce into one large population.
b. A population is fragmented into isolated subpopulations.
c. Individuals colonize a novel habitat.
d. Individuals disperse and found a new population.
489views - Textbook Question
Add labels to the figure that follows, which illustrates the three steps required for speciation to occur.
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