Initiating force of evolution is
Adaptation
Natural selection
Variation
Competition
(c) Evolution is generally progressive and for evolution the most important requirement is variation.
Definitions / Explanation : Genetic drift & Gene migration (gene flow)
Random genetic drift in a population probably results from
Write short note on Hardy – Weinberg principle.
Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as
According to the Darwin's theory of evolution, differences between the species occurs due to
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