AP Biology Questions! Help!! 10 points to anyone who answers the question.?1. Which of the following did Darwin not understand about natural selection?
A. the source of genetic variation
B. that organisms become extinct
C. that variation is common in populations
D. that competition exists in populations
E. that populations overproduce offspring
2. The human appendix is considered by many a vestigial organs. Which of the following statements would not be consistent with this view?
A. the appendix can be surgically removed with no ill effects
B. the appendix might have been larger in fossil hominids
C. the appendix has a larger blood supply compared to other parts of the digestive system
D. individuals with larger than average appendix leave no more offspring than those with a below average sized appendix.
E. in a million years, the human species might completely lack an appendix.
3. Many species of animals are indigenous to caves. Which of the following structures would be most likely to have become vestigial in these organisms?
A. ears
B. eyes
C. teeth
D. legs
E. tail
4. All of the following statements about balanced polymorphism are correct except it
A. is maintained by natural selection
B. is associated with heterogeneous environments
C. can be caused by frequency dependent selection
D. heterozygous for the allele
E. afflicted with the disorder caused by the allele
5. Which of the following is not considered a reproductive isolating mechanism?
A. sterile offspring
B. ecological isolation
C. feeding behavior
D. gametic incompatibility
E. timing of courtship display
6. Which of the following best describes what occurs when two species hybridize and a fraction of the hybrids manage to backcross with one of the parent species?
A. introgression
B. genetic drift
C. differential reproduction
D. heterozygote
E. random mating
7. The ostrich and the em look very similar and live in similar habitats, although they are not very closely related. This is an example of?
A. divergent evolution
B. convergent evolution
C. sympatric speciation
D. coevolution
E. adaptive radiation
Posted by Charlie Gusho
1. A
2. D
3. B
5. C
6. A
7. B
Posted by Cirbryn
1. Which of the following did Darwin not understand about natural selection?
A. the source of genetic variation
2. The human appendix is considered by many a vestigial organs. Which of the following statements would not be consistent with this view?
[This is the answer they probably consider correct, on the grounds that a smaller appendix would have evolved because those with smaller than average appendices would have an advantage]:
D. individuals with larger than average appendix leave no more offspring than those with a below average sized appendix.
[However, that answer is not correct because it focuses on selective differences at the current time, rather than at the time our small appendix was evolving.]
3. Many species of animals are indigenous to caves. Which of the following structures would be most likely to have become vestigial in these organisms?
B. eyes
4. All of the following statements about balanced polymorphism are correct except it
E. afflicted with the disorder caused by the allele
5. Which of the following is not considered a reproductive isolating mechanism?
C. feeding behavior
6. Which of the following best describes what occurs when two species hybridize and a fraction of the hybrids manage to backcross with one of the parent species?
A. introgression
7. The ostrich and the em look very similar and live in similar habitats, although they are not very closely related. This is an example of?
B. convergent evolution
Orignal From: AP Biology Questions! Help!! 10 points to anyone who answers the question.?
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