Exam 2, Exam 3-100% SOLVED
The process of changes arising due to random chance is:
a. natural selection
b. sexual selection
c. genetic drift
d. hereditary Correct Ans-c. genetic drift
Which of the following was not proposed by Darwin?
a. sexual selection
b. genetic drift
c. DNA as the hereditary materials
d. a and c
e. b and c Correct Ans-e. b and c
On which point would Charles Darwin and Georges Buffon have likely disagreed?
a. the idea that the earth was formed according to the laws of physics
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Exam 2, Exam 3-100% SOLVED
b. the idea that all life shares a common ancestor
c. the idea that species change over time
d. none of the above Correct Ans-b. the idea that all life shares a common ancestor
New Mutation:
a. are random with respect to their effects on fitness
b. are necessary for natural selection to cause evolutionary change
c. are rare in a population
d. all the choices are correct
e. are random with respect to their effects on fitness and are necessary for natural selection
to cause evolutionary change Correct Ans-e. are random with respect to their effects on
fitness and are necessary for natural selection to cause evolutionary change
Which of the following is not Homology?
a. The fluke of a whale and the tail fin of a tuna bowl
b. the mammary glands of a whale end of a platypus
c. ectotympanic of the human and the ectotympanic of a whale
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Exam 2, Exam 3-100% SOLVED
d. the lack of hind limbs whale and dolphins Correct Ans-a. The fluke of a whale and the
tail fin of a tuna bowl
Drawing on your knowledge of evolution, why is treatment and or vaccination against viruses
particularly difficult?
a. their replication rate increases the probability of beneficial mutation
b. their high mutation rate increases the probability of beneficial mutation
c. viral reassortment increases the pathogenicity of viruses
d. Their high replication rate increases the probability of beneficial mutation and their high
mutation rate increases the probability of beneficial mutations
e. Their high replication rate increases the probability of beneficial mutation, their high
mutation rate increases the probability of beneficial mutation, and viral reassortment
increases the pathogenicity of viruses Correct Ans-e. Their high replication rate increases
the probability of beneficial mutation, their high mutation rate increases the probability of
beneficial mutation, and viral reassortment increases the pathogenicity of viruses
On what point(s) would Charles Darwin and Jean-Baptiste Lamarck have agreed:
a. adaptation occurs when individuals change to adapt to their environment
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b. life is spontaneously generated all the time
c. species give rise to new species
d. simple organisms have existed for a shorter period of time than complex organisms
e. none of the above Correct Ans-c. species give rise to new species
Homologous and homoplastic traits differ because:
a. homoplastic traits perform the same function in different species, whereas homologous
traits perform a different function
b. homologous traits arise through convergent evolution, whereas homoplastic traits do not
c. homoplastic traits arise through convergent evolution, whereas homologous traits do not
d. a and b
e. a and c Correct Ans-c. homoplastic traits arise through convergent evolution, whereas
homologous traits do not
Why was Lord Kelvin's calculation of the Earth's age inaccurate?
a. he assumed that the Earth was a rigid sphere
b. he assumed the heat is lost at a constant rate