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26 Cards in this Set
- Front
- Back
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most species on earth have changed through time. this change is known as
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evolution
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evolution refers to change over time in
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populations
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many scientists believe that the earliest cells on earth were relatively simple, lacking nuclear membranes and other organized cellular structures. over time, more complex cells developed from these simple cells. these statements describethe concept of
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evolution
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which statement best describes the major concept of the biology theory of evolution?
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present-day organisms on earth developed from earlier, distinctly different organisms
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some behaviors such as mating and caring for young are genetically determinded in certain species of birds. the presence of these behaviors are most likely due to the fact that
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these behaviorshelped birds to survive in the past
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which concept includes the other three?
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natural selection
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a cat hiding.....
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darwin
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traits that enable an organism to survive are known as
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adaptations
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the structural changes that occured in certain plants over time, enabling them to thrive in dry habitats, are examples of
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adaptations
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the human earlobe, because it is not used, will probably disappear from the human population in the future. this statement refelcets the theory of
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lamarck
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in yellowstone, some species of bacteria can survive and reproduce in hot springs at temperatures near the boiling point of water. the ability to survive and reproduce at these temperatures is an example of
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adaptations
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which individual would most likely agree with this statement? a weightlifter who built up muscles through frequent exercise would be likely to have stong offspring.
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lamarck
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which statement would most likely be in agreement with lamarck'stheory of evolution?
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giraffes have long necks because their anscestors stretched their necks reaching for food, and this trait was passed on to their offspring
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which statement is not included as part of the modern theory of evolution?
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new organs arise when they are needed
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which statement is not included as part of the modern theory of evolution?
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new organs arise when they are needed
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according to the heterotroph hypothesis, early heterotrophs modified the environment by releasing
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carbon dioxide
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which scientists proposed theories that attempted to explain the evolution of organisms?
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darwin and lamarck
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which scientists proposed theories that attempted to explain the evolution of organisms?
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darwin and lamarck
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the seperation of a small group of individuals from the main population is known as
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geographic isolation
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members of a population may become seperated from the original population by a newly formed mountain range.l this occurence is an example of
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geographic isolation
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modern evolutionary theory consists of darwin modified by knowledge concerning
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the genetic basis of variation
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insulin extracted from cattle is so similar to the insulin of humans that it is used to treat human diabetics. this similarity is an example of a type of evidenve for evolution gained from comparative
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biochemistry
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is a species of bear in russia and the brown bear in the united states have a common anscestor, the differences between these two species most likely resulted from
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mutations and genetic recombination
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which observation provides the best evidence that two different animals most likely have a common ancestor?
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similar embryological development
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fossils of an extinct species of giant armadillo were found to be similar to a smaller species of armadillo presently inhabiting the same region. this can be explained on the basis of
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evolution from older forms
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fossil records indicate between 80 and 60 million years ago the structure of the horned dinosaur frequently underwent rapid changes seperated by long periods of stability. this pattern of change best illustrates the concept of
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punctuated equlibrium
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