9.3,9.4: Genetic diversity and selection Flashcards
1
Q
Genetic diversity
A
The total number of different alleles in a population.
2
Q
Directional selection
A
Selection may favour individuals that vary in one direction from the mean of the population.
(Changes the characteristics of a population)
3
Q
Stabilising selection
A
Selection may favour average individuals.
Preserves the characteristics of a population
4
Q
Polygenes
A
More than one gene influences characteristics
5
Q
Phenotype
A
The observable physical and biochemical characteristics of an organism.
6
Q
Three types of adaptation
A
Anatomical
Physical
Behavioural
