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Evolution — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYEvolution2 Marks
Question
How does 'fitness' of a population help in evolution?
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Answer

Fitness, according to Darwin, refers ultimately and only to reproductive fitness. Those who are better fit in an environment would outbreed others, who are less fit in that environment; they leave more progeny (with more fit individuals) than others. They will survive better and are selected by nature (natural selection) to reproduce and increase their population size.

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