BIOL286 BIOL 286 EXAM 2 – 27 MCQs
PURDUE UNIVERSITY
Part III: There are 25 multiple-choice questions (plus 2 bonus). Select the best answer to each and fill in
the corresponding letter on your scantron sheet. Each question is worth three points.
1. Which of the following is/are likely to result in stabilizing selection?
A. Positive assortative mating
B. Negative assortative mating
C. Polygyny
D. Both A and C only.
E. Both B and C only.
2. Which of the following organisms would be classified as cooperative breeders?
A. Florida scrub jays
B. White-throated sparrows
C. C. Naked mole rats
D. D. All of the above.
E. Both A and C only.
3. In order to maximize your fitness, which of the following should you do? (Read each option carefully)
A. Have two children of your own instead of helping your parents raise two additional siblings that
they would not be able to raise without your help, to maximize direct fitness.
B. Help your parents raise four additional siblings that they would not be able to raise without your
help instead of having two children of your own, to maximize indirect fitness.
C. Help your parents raise two additional siblings that they would not be able to raise without your
help instead of having two children of your own, to maximize direct fitness.
D. Have two children of your own instead of helping your parents raise two additional siblings that
they would not be able to raise without your help, to maximize indirect fitness.
E. Help your parents raise four additional siblings that they would not be able to raise without your
help instead of having two children of your own, to maximize direct fitness.
4. The patagium (webbed skin between the forelimb and hindlimb) of sugar gliders and flying squirrels
are an example of
A. homologous characteristics
B. analogous characteristics
C. parallel evolution
D. Both A and C only.
E. Both B and C only.
5. Which of the following describe the mating strategies among male ruff (Calidris pugnax)?
A. The independent males are the ancestral breeding phenotype.
B. Female mimics are the more recently evolved phenotype.
C. The strategies are correlated with different amounts of testosterone circulating in the male’s
blood.
, D. All of the above are correct.
E. Both A and C are correct.
6. Which of the following can be true for an organism that migrates?
PURDUE UNIVERSITY
Part III: There are 25 multiple-choice questions (plus 2 bonus). Select the best answer to each and fill in
the corresponding letter on your scantron sheet. Each question is worth three points.
1. Which of the following is/are likely to result in stabilizing selection?
A. Positive assortative mating
B. Negative assortative mating
C. Polygyny
D. Both A and C only.
E. Both B and C only.
2. Which of the following organisms would be classified as cooperative breeders?
A. Florida scrub jays
B. White-throated sparrows
C. C. Naked mole rats
D. D. All of the above.
E. Both A and C only.
3. In order to maximize your fitness, which of the following should you do? (Read each option carefully)
A. Have two children of your own instead of helping your parents raise two additional siblings that
they would not be able to raise without your help, to maximize direct fitness.
B. Help your parents raise four additional siblings that they would not be able to raise without your
help instead of having two children of your own, to maximize indirect fitness.
C. Help your parents raise two additional siblings that they would not be able to raise without your
help instead of having two children of your own, to maximize direct fitness.
D. Have two children of your own instead of helping your parents raise two additional siblings that
they would not be able to raise without your help, to maximize indirect fitness.
E. Help your parents raise four additional siblings that they would not be able to raise without your
help instead of having two children of your own, to maximize direct fitness.
4. The patagium (webbed skin between the forelimb and hindlimb) of sugar gliders and flying squirrels
are an example of
A. homologous characteristics
B. analogous characteristics
C. parallel evolution
D. Both A and C only.
E. Both B and C only.
5. Which of the following describe the mating strategies among male ruff (Calidris pugnax)?
A. The independent males are the ancestral breeding phenotype.
B. Female mimics are the more recently evolved phenotype.
C. The strategies are correlated with different amounts of testosterone circulating in the male’s
blood.
, D. All of the above are correct.
E. Both A and C are correct.
6. Which of the following can be true for an organism that migrates?
