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What is selective pressure.

Sagot :

marifer042007

Answer:

Selection pressures are external agents which affect an organism’s ability to survive in a given environment

Selection pressures can be negative (decreases the occurrence of a trait) or positive (increases the proportion of a trait)

Selection pressures may not remain constant, leading to changes in what constitutes a beneficial adaptation

Types of selection pressures include:

Resource availability – Presence of sufficient food, habitat (shelter / territory) and mates

Environmental conditions – Temperature, weather conditions or geographical access

Biological factors – Predators and pathogens (diseases)

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