Unit 2 - Topic 2 - Evolution - Section B - Fitness

Question 1

What does fitness indicate

Answer 1

An individual’s ability to be successful at surviving and reproducing

Question 2

What is fitness a measure of

Answer 2

The tendency of some organisms to produce more surviving offspring than competing members of the same species.

Question 3

What does fitness refer to

Answer 3

The contribution made to the gene pool of the next generation by individual genotypes

Question 4

What is absolute fitness

Answer 4

The ratio between the frequency of individuals of a particular genotype after selection, to those before selection

Question 5

What does absolute fitness in relation to 1

Answer 5

Absolute=1 frequency of that genotype is stable, Absolute>1 increase in the genotype, Absolute<1 decrease

Question 6

What is relative fitness

Answer 6

The ratio of the number of surviving offspring per individual of a particular genotype to the number of surviving offspring per individual of the most successful genotype