Question

How does evolution occur. tell in brief

Answer 1

New traits can also come from transfer of genes between populations, as in migration, or between species, in horizontal gene transfer. Evolution occurswhen these heritable differences become more common or rare in a population, either non-randomly through natural selection or randomly through genetic drift.

Answer 2

Evolution is the word that is derived from Greek word evolver . Evolution is generally occurred due to environmental changes which living organisms...accept to continue their life...because they has to maintain themselves in the current environment ...so Evolution is necessary...

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