What happens if epigenetic don't contribute to variation? Plz give a brief description

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What is the role of the phospholipid belayer in cellular transport in living cells

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

Both male and female gametes are created during the process of meiosis. the formation of male gametes is called spermatogenesis. after telophase il of spermatogenesis, there would be are all genetically male gametes created that