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19 Cards in this Set
- Front
- Back
Which of the following scientists first described evolution as a process of adaptation?
a. Darwin b. Buffon c. Lamarck d. Lyell e. Malthus |
C. Lyell
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The ideas of Charles Lyell and other geologists of the time suggested that
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the earth was much older than originally thought
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The idea that an individual’s enhanced characteristics would be passed on to offspring is called
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inheritance of acquired characteristics
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Thomas Malthus proposed that events such as disease, famine, and homelessness were caused by
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an increase in human population
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In certain environments, a greenish form of a caterpillar blends in with its surroundings better than a yellowish form of the same type of caterpillar. Therefore, the yellow caterpillar is eaten more often by birds than the green caterpillar. More of the green caterpillars become butterflies that produce more green caterpillars. The percentage of green caterpillars in the population grows. This is an example of
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natural selection
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The preserved remains of an organism are called
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fossils
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Which of the following statements is true?
a. Fossils of extinct species do not help scientists today. b. Fossils of extinct species hold all the clues needed to explain evolution. c. Fossils of extinct species are never found above sea level. d. Fossils of extinct species help scientists reconstruct the past. e. Fossils of extinct species show how little life on Earth has changed. |
D. fossils of extinct species help scientists to reconstruct the past
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Whale flippers, bat wings, and cat legs are considered to be __________________ because they have the same skeletal parts, despite the fact that they have different functions.
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homologous structures
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An example of a vestigial structure is
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the human tailbone
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Which organism’s amino acid sequence for hemoglobin most closely matches that of a human?
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Gorrillas
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A group of organisms of the same species living in the same area at the same time is called a(n)
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population
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Difference among members of the same species is known as
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variation
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Natural selection tends to result in the success of
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organisms that are most adapt to their environment
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Genetic drift in a small population that is colonizing a new territory is known as
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the founder effect
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Which of the following statements is true?
a. Populations rarely remain in Hardy-Weinberg equilibrium for long in nature. b. Larger populations are impacted by genetic drift more than smaller ones. c. A change in the gene pool due to chance is called gene flow. d. The exchange of genes with another population is called genetic drift. e. Reducing the size of a population actually increases the gene pool. |
a. Populations rarely remain in Hardy-Weinberg equilibrium for long in nature.
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Mutations are the original source of variation in
a. large populations. b. sexually reproducing organisms. c. asexually reproducing organisms. d. small populations. e. all of the above. |
e. all of the above
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The best measure of an organism’s biological fitness is
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whether it produces healthy fertile offspring
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The Grant’s research on finch beaks on the Galápagos Islands has shown that
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natural selection can be measured in a human lifetime
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Sickle-cell allele is common in human populations in the African tropics. One probable reason for this is that the allele provides resistance to the symptoms of
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malaria
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