Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYEvolution2 Marks
Question
Evolution is not a direct process, but a stochastic process, based on chance event(s) in nature. Justify.
✓
Answer
Evolution is not a direct process in terms of determinism.
As the environment changes, due to meteorological, biological and other physical activities, the organisms which are better adapted to the changed environment are selected by nature in a much lesser time scale.
It is also true for natural selection and evolution of antibiotic-resistant strains of bacteria in a time scale of months.
So, evolution is a stochastic process based on chance events in nature and chance mutation in the organism.
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