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Q.
In humans, what is the ratio of number of gametes produced from one male primary sex cell to the number of gametes produced from one female primary sex cell ?
From a diploid, primary spermatocyte, four haploid spermatozoa are produced through meiosis. While, from a diploid primary oocyte, only one haploid ovum is formed, rest are polar bodies. Hence, the ratio between male gametes and female gametes produced from respective primary sex cells is 4 : 1.