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Theory of Natural Selection

Which type of...

Question

Which type of selection favours extreme phenotypes?

A

Disruptive selection

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B

Directional

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C

Stabilising

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D

All of these

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Solution

The correct option is A Disruptive selection
Disruptive selection is a type of selection which reduces the reproduction of organisms with intermediate traits and allows organisms with extreme traits to reproduce more. Hence, disruptive selection favours the extreme phenotypes and eliminates the intermediate ones.

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Similar questions

Q. When natural selection acts to eliminate the extreme phenotypes and favours the intermediate phenotypes in a population, it is termed as-

Q. Read the following statements and select the correct option.

I. When certain individuals migrate out of the population, gene frequencies change in the population.

II. Stabilising, directional and disruptive selection are types of artificial selection.

III. Extreme phenotypes are favoured in the disruptive selection.

IV. Single step large mutation is called genetic drift.

Q. Read the following statements
I) Directional selection occurs when natural selection favours one extreme of continuous variation.
II)Disruptive selection occurs when natural selection favours both extremes of continuous variation.
III) In directional selection, a population's genetic variance shifts toward a new phenotype when exposed to environmental changes.
IV)Random changes in gene frequencies due to chance in large population is called genetic drift.
True statements are

Q. The type of natural selection in which new species evolve due to the extreme forms of trait being favoured by nature while intermediate forms are selected against.

Q. Which of the following type of selection is responsible for the reduction of phenotypic variation in a population?

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