Kin Selection

Question 0

Interactions:

Answer 0

Selfishness +/-
Cooperation +/+
Spiteful -/- (rare)
Altruism -/+

Question 1

Abiotic and biotic factors affect fitness …

Answer 1

Group living affects other members fitness

Question 2

Altruism =

Answer 2

Actor harmed, recipient benefits .. Recipient leaves more offspring

Question 3

What explains altruism?

Answer 3

Kin selection as altruistic behaviour occurs when surrounded by relatives

Question 4

Inclusive fitness = direct fitness + indirect fitness which is..

Answer 4

Hamiltons rule: Br-C>0

Question 5

For altruism to occur:

Answer 5

Br>C which is only possible when r is greater than 0 - have to be related!

Question 6

Probability that 2 homologous alleles are identical by descent

Answer 6

Relatedness

Question 7

Ultimate reproductive altruism

Answer 7

Eusociality

Question 8

Eusociality evolved:

Answer 8

In mother-offspring associations and through a monogamy window..monogamy = ancestral state in some eusocialites

Question 9

Features of eusociality

Answer 9

Cooperative brood care
Overlap in parent-offspring generations
Specialised castes of non-reproductive individuals

Question 10

Eusocial insects features:

Answer 10

Haplodiploidy changes relatedness: sisters more related than offspring so increases inclusive fitness by being sterile and rearing sisters

Question 11

Conflicts arise due to:

Answer 11

Queen-worker conflict over sex ratio
Between workers RE queen production
Conflict over male production
Conflict in caste determination

Question 12

Primary sex ratio decided by queen. Secondary sex ratio decided by workers.

Answer 12

Queen-worker conflict over Sex ratio

Question 13

Nepotism=favour most closely related individuals

Answer 13

Conflict between workers RE queen production

Question 14

Workers decide fate of eggs

Answer 14

Conflict over male production

Question 15

Policing to avoid tragedy of the commons

Answer 15

Conflict in caste determination