The diagram below shows the process of natura | vedclass

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(D) Natural selection can lead to three types of changes in the distribution of traits in a population:$1$. $P$ represents Stabilizing selection,where

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Stabilizing,Directional,Disruptive

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(D) Natural selection can lead to three types of changes in the distribution of traits in a population:$1$. $P$ represents Stabilizing selection,where the mean phenotype is favored and the extremes are selected against,resulting in a narrower distribution curve.$2$. $Q$ represents Directional selection,where one extreme phenotype is favored,causing the entire curve to shift in one direction.$3$. $R$ represents Disruptive selection,where both extreme phenotypes are favored over the intermediate phenotype,resulting in a bimodal distribution curve.Therefore,the correct sequence is $P$ = Stabilizing,$Q$ = Directional,$R$ = Disruptive.

The diagram below shows the process of natural selection. Choose the correct option for $P, Q$ and $R$.

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Observations from England support evolution by natural selection. Before industrialization, $P$ moths were more abundant on trees, whereas after industrialization, $Q$ moths were more abundant. Identify $Q$.

Adaptation of a species is its

Assertion : Natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits.
Reason : Adaptive forms of a given trait tend to become more common; less adaptive ones become less common or disappear.

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