bio 101 nvcc final exam questions with answers

bio 101 nvcc final exam questions with answers
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What is an adaptation? |\ |\ |\ |\




A.a genetic change over time
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B.an increase in reproductive success by certain individuals
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C.a trait that is heritable and confers reproductive success
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D.differential reproductive success of a particular individual |\ |\ |\ |\ |\ |\ |\




E. B & D - CORRECT ANSWERS ✔✔C.a trait that is heritable and
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confers reproductive success |\ |\




In a population of dogs, long ears are dominant over short ears. If
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50 of 200 dogs in a population have short ears, how many of the
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long-eared dogs are homozygous dominant? A. 25
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B. 50 |\ |\




C. 75 |\ |\




D. 100 |\ |\




E. 60 - CORRECT ANSWERS ✔✔B. 50
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A population in which an extreme phenotype is favored
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undergoes ____ selection. |\ |\ |\




A. disruptive
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B. directional
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C. stabilizing
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D. artificial
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,E. polynomial - CORRECT ANSWERS ✔✔B. directional
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Which statement illustrates Lamarck's theory on the mechanism
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of evolution?
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A. Fish with coloration that matches the river bottom they inhabit
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will survive to reproduce
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B. Plants that can survive in less light will become the dominant
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species in shaded areas |\ |\ |\ |\




C. Birds with bright colors will attract more mates and pass on
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the colorful plumage
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D. A man who routinely shaves the hair off his head will have
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sons who become bald |\ |\ |\ |\




E. Giraffes with longer necks survived and reproduced faster
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because they could reach a better food source - CORRECT
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ANSWERS ✔✔D. A man who routinely shaves the hair off his head
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will have sons who become bald
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What is the Hardy-Weinberg equation? - CORRECT ANSWERS
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✔✔P+Q=1, p2+2pq+q2=1 |\




Boa constrictors have tiny pelvic girdles and leg bones inside
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their bodies. Because these structures are nonfunctional
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"evolutionary baggage," they are called:
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A. convergent
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B. analogous
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C. maladaptive
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D. homologous
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, E. vestigial - CORRECT ANSWERS ✔✔E. vestigial
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Which of the following are vestigial structures?
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A. fish fins
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B. vertebral columns in snakes
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C. pelvic bones of whales
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D. wings of bats
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E. hoofs of horses - CORRECT ANSWERS ✔✔C. pelvic bones of
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whales


Humans still have body hair even though it is greatly reduced
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and serves little function. The hair is a(n):
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A. analogous structure
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B. homologous structure
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C. vestigial structure
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D. adaptation
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E. mutation - CORRECT ANSWERS ✔✔C. vestigial structure
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The human upper arm bone (the humerus) is structurally similar
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to the upper wing bone of a bat. The structural similarity is an
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example of: |\ |\




A. analogous structures
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B. homologous structures
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C. vestigial structures
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D. adaptation
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