9.3,9.4: Genetic diversity and selection Flashcards

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1
Q

Genetic diversity

A

The total number of different alleles in a population.

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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)

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3
Q

Stabilising selection

A

Selection may favour average individuals.

Preserves the characteristics of a population

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4
Q

Polygenes

A

More than one gene influences characteristics

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5
Q

Phenotype

A

The observable physical and biochemical characteristics of an organism.

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6
Q

Three types of adaptation

A

Anatomical
Physical
Behavioural

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