EXAM 2 Review

Question 1

Which model of sexual selection is demonstrated by the image below?

A. direct benefits
B. good genes
C. runaway sexual selection

Answer 1

B. good genes

Question 2

Which of the following graphs of male vs. female reproductive success would you expect in a species with a monogamous mating system?

Answer 2

C

Question 3

We discussed sandflies as an example of runaway sexual selection, indicating that this species likely has a _____ mating system.

A. Polygynous
B. Promiscuous
C. Polyandrous
D. Monogamous

Answer 3

A. Polygynous

Question 4

Imagine an anisogamous species with a polyandrous mating system. In this example, we would expect the ___ to invest more energy in producing the gamete and the ____ to invest more energy in the offspring after hatching/birth.

A. female; female
B. female; male
C. male; male
D. male; female

Answer 4

B. female; male

Question 5

Which of the following is/are a cost of asexual reproduction, as compared to sexual reproduction?

A. Adaptations are more likely to be lost over time, as each gamete
only has half of the parent’s genetic material.
B. Because each parent produces similar-sized gametes, the survival
likelihood of the offspring is low.
C. Deleterious mutations are more likely to accumulate in the genome
over time.
D. All of the above

Answer 5

C. Deleterious mutations are more likely to accumulate in the genome
over time.

Question 6

Which species interaction in the effect map below best represents interference competition?

Note: The solid lines indicate direct effects and the dotted lines indicate indirect effects. The +/- signs represent positive or negative relationships between the two relevant factors.

a) Interaction between Species 1 and Species 2
b) Interaction between Species 2 and Species 3
c) Interaction between Species 1 and Species 3
d) B & C

Answer 6

b) Interaction between Species 2 and Species 3