Chapter 2 - Ecology and Evolution Flashcards

1
Q

What is biological evolution?

A

Biological evolution is changes in any attribute of a population over time.

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2
Q

What is Fitness?

A

Fitness is a measure of the contribution of an individual to future generations and can also be called adaptive value.

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3
Q

What is the three types of natural selection?

A

Directional Selection, Stabilizing Selection, and Disruptive Selection

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4
Q

How are directional, stabilizing, and disruptive selection different?

A

Directional = Phenotypes at one extreme are selected against. (one or the other selection)
Stabilizing = Phenotypes near the mean of the population are fitter than those at either extreme. (mid selection)
Disruptive = The extremes are favored over the mean. (extreme ends selection)

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5
Q

What is the difference between proximate and ultimate factors?

A
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