MHT CET Biology question

Which of following examples best illustrates the evolution by natural selection?

(A)An asthmatic person has troubled breathing and he learns to live with it
(B)A man and woman have 10 children together maximizing are chances of genes to stay in population
(C)A population becomes immune to a lethal disease over many generationCorrect
(D)A group of species has common DNA sequences indicating their relatedness

Answer: (C)

Solution

When a population gradually becomes immune because resistant individuals survive and reproduce more, allele frequencies change by natural selection; an individual coping with asthma (a) is

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Question ID VK-067539