Question: 1.Pick the true statement
a. Deleterious alleles will have the same fitness effect whether
they a…



1.Pick the true statement

a. Deleterious alleles will have the same fitness effect whether
they act early or late in an individual’s reproductive life, as
long as the strength of selection against them is strong.

b. For neutral mutations, the rate of substitution depends on
population size.

c. The molecular clock cannot be used to compare species that
have vastly different generation times.

d. The neutral theory is supported by the fact that rates of
substitution are lower at non-synonymous sites than at synonymous
sites.

e. a and b

f. c and d

g. None of the above

2.The vervet monkey can sound an alarm call when predators are
near, warning conspecifics so that they can hide or flee. However,
the individual that sounds the alarm makes herself more conspicuous
to the predator.

If a vervet monkey traveling with a single offspring sees a
leopard and makes an alarm call, both she and her offspring will be
noticed and killed, but she will be able to save 6 of her nieces
and nephews who are nearby. If she doesn’t call, she and her
offspring will survive, but her nieces and nephews will be killed.
Based on current fitness, not future reproductive potential, is it
an adaptive behavior for this female to sound the alarm?

a.

Yes, the alarm call increases her net fitness

b.

No, altruistic behaviors are never adaptive when the actor
(signaler) can be killed

c.

No, the alarm call decreases her net fitness

.

d. Either scenario is equivalent in terms of net fitness

3.Which of the following is the best example of different levels
of selection acting in opposition?

a.

In plants, forming a large gall decreases the risk of parasitoid
infection, but increases the risk of being eaten by a bird.

b.

For a species of crab, a large claw helps males defend against
predators and makes them more attractive to females.

c.

Cancerous cells have higher proliferation rates than
non-cancerous cells, but decrease the fitness of the
individual.

d.

When a vampire bat shares a blood meal with a conspecific in
need, this action decreases the sharer’s food supply temporarily,
but it increases the likelihood that another conspecific will help
the sharer in the future.

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