Term
| The biological species concept: |
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Definition
| defines a species as any group of actually or potentially interbreeding species that produce viable offspring. |
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Term
| __________________ isolating mechanisms include hybrid mortality and hybrid infertility. |
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Definition
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Term
| Phase 1 of the creation of life on earth was _____________________. Phase 2 was the formation of self-replicating, information-containing molecules. Phase 3 was the development of a membrane, which enabled metabolism and created the first cells. |
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Definition
| the formation of small molecules containing carbon and hydrogen |
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Term
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Definition
| the study of the diversity of life to understand its evolutionary history. |
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Term
| Researchers have found that mixtures of phospholipids placed in water or salt solutions tend to spontaneously form: |
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Definition
| small spherical units that resemble living cells. |
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Term
| The pace of evolution in which there is little change for long periods of time interrupted by short periods with major changes is called: |
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Definition
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Term
| The __________________________ propelled the flowering plants to an explosive adaptive radiation. |
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Definition
| evolutionary innovation of the flower |
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Term
| Applying what you know about punctuated equilibrium versus gradualism, which method of speciation is most likely to lead to punctuated equilibrium? |
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Definition
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Term
| At the time life first evolved on earth: |
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Definition
| there was less oxygen and more methane in the atmosphere than there is today. |
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Term
| Speciation without geographic isolation is called: |
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Definition
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Term
| Different organisms with an identical specific epithet, such as Drosophila melanogaster and Thamnophis melanogaster, are related to each other at the level of: |
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Definition
| No particular relationship is implied by the fact that two organisms have identical specific epithets. |
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Term
| The morphological species concept: |
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Definition
| groups species based on similar phenotype. |
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Term
| Much of what is known about the history of the origin of life came from: |
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Definition
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Term
| The classic experiments performed in the 1950s by Harold Urey and Stanley Miller, were the first to show that: |
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Definition
| simple organic molecules, such as amino acids, could form spontaneously in the laboratory under chemical conditions mimicking those of primitive Earth. |
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Term
| In a set of classic experiments performed in the early 1950s, Urey and Miller subjected an experimental system composed of H2, CH4 (methane), and NH4 (ammonia) to electrical sparks. A few days later, they found ________________ in their system. |
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Definition
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Term
| Scientists disagree about how many species are currently on earth for all of the following reasons EXCEPT: |
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Definition
| there is controversy over whether natural selection is the only mode of speciation. |
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Term
| Populations of Larus gulls around the North Pole show an unusual pattern of reproductive isolation. Each population is able to interbreed with its neighboring populations, but populations separated by larger geographic distances are not able to interbreed. This type of species complex is known as a: |
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Definition
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Term
| In one sense, microevolution is ___________________ and macroevolution is _________________. |
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Definition
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Term
| The honeycreepers are a group of Hawaiian birds with many different species that all evolved from a single species that migrated from the Americas. The speciation of the honeycreepers is most likely to be an example of which pattern of evolution? |
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Definition
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Term
| All of the living organisms that we can see with the naked eye are |
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Definition
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