10- Kin Recognition

Question 1

What is altruism between unrelated individuals known as?

Answer 1

Reciprocity or reciprocal altruism

Question 2

What is altruism between kin known as?

Answer 2

Kin selection

Question 3

What is the purpose of kin selection?

Answer 3

To increase inclusive fitness

Question 4

How might kin recognition occur?

Answer 4

Establish identity with a signature or cue and decode it

Question 5

3 ways how kin altruism may occur

Answer 5

1. Phenotype matching
2. Individual allelic recognition
3. Spatial distribution

Question 6

What is an example of ‘brood parasites’?

Answer 6

Birds sometimes lay eggs in other birds’ nests- gulls don’t recognise their own eggs but guillemots do

Question 7

3 important factors of kin selection

Answer 7

1. Relatedness degree
2. Relatedness certainty
3. Life expectancy

Question 8

Why is relatedness certainty important in kin selection?

Answer 8

Parent-offspring care is more common than sibling-sibling care, we are more likely to care for someone we are more similar with

Question 9

Why is life expectancy important in kin selection?

Answer 9

There is often a correlation between ancestor longevity and subsequent longevity