Question 1 Is haplodiploidy a necessary condition for the evolution of eusociali

Question

Question 1

Is haplodiploidy a necessary condition for the evolution of eusociality?

Select one:

a. Yes, true eusociality is found only in the hymenoptera.

b. Yes, eusociality can only evolve when indirect fitness is as high as occurs between haplodiploid sisters.

c. No, true eusociality is also found in organisms that do not have a haplodiploid genetic system.

d. No, coefficients of relatedness between sisters are never 0.75 because there are always multiple fathers.

Question 2

Compared to most physical resources, how is information unique?

Select one:

a. There is no cost associated with sharing information.

b. The production and sharing of information does not require energy.

c. Because information is not a tangible physical entity, it does not affect an individual’s fitness.

d. Information does not become depleted by sharing.

Question 3

In an analysis of independent contrast, researchers found that fetuses in polyandrous species of primates had faster growth rates than those in monogamous species. What did the researchers conclude from these results?

Select one:

a. Fetuses develop faster to “make room” for offspring from a different male.

b. Extracting more resources from the mother maximizes offsprings’ inclusive fitness in polyandrous species.

c. Fast fetal growth rates are always optimal.

d. Fetal growth rates represent phylogenetic constraints and are unrelated to mating systems.

Explanation / Answer

1. c. No, true eusociality is also found in organisms that do not have a haplodiploid genetic system.

Some of the examples of eusocial species that are not haplodiploid are termites and mole rats.

2. d. Information does not become depleted by sharing.

Physical resources get decreased over time while information can be shared countless times.

3. b. Extracting more resources from the mother maximizes offsprings’ inclusive fitness in polyandrous species.

Due to predation pressure the growth rates are higher.

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