Lecture 7: Ultimate Consequences 2 Flashcards
1
Q
Describe a conservative life history strategy.
A
- Long-lived species
- Variable environment effect on offspring
- High mortality rate of offspring.
2
Q
Describe a risky life history strategy.
A
- Shorter lived species
- Variable environment effect on adults
- Higher survival rate of offspring.
3
Q
Define ‘senescence’.
A
The decline in fitness of an organism with age and physiological deterioration.
4
Q
Define ‘mutation accumulation’.
A
The decrease of selection pressure with age, allowing accumulation of mutation.
5
Q
What is ‘indirect fitness’? Give an example.
A
An individual may gain indirect fitness through a close relative reproducing, because they are passing on genes which they share with the individual.
6
Q
What is ‘Hamilton’s Rule’?
A
rb > c.
r = relatedness b = benefit c = cost.
