EUSOCIALITY & COEVOLUTION (Ch. 12.5)

Question 1

Know the hypotheses of what traits facilitate eusociality (haplodiploidy & monogamy)

Answer 1

Haplodiploidy hypothesis:

Haplodiploidy (males developing from unfertilized eggs, affecting relatedness) results in eusociality 2. (Bees)

Monogamy hypothesis: Certainty of ½ relatedness leads to eusociality (Naked mole rats)

Ecology & life history hypothesis: Complex brood care (nest building, care for larvae) leads to eusociality

Question 2

What fossil evidence exists for sociality (and potentially eusociality) in hymenopterans?

Answer 2

Two ants fighting in amber fossil

Question 3

two taxa influence each other’s evolution; generally associated with extreme symbiotic relationships

Answer 3

Coevolution

Question 4

Coevolution in pollination biology

Answer 4

A mutualistic relationship is seen between pollinators and plants.

Question 5

Coevolution in malaria parasites

Answer 5

A parasitism relationship is seen between its host and external parasites. Humans are adapting their immune responses.

Question 6

How do different genes affect kin selection behavior in bees?

Answer 6

Maximize inclusive fitness by helping your siblings have offspring