The essence of sexual reproduction is the random selection of half of the diploid chromosome set to make a haploid gamete, followed by fusion of two haploid gametes to produce a diploid cell.
在生物有性生殖的结果是否定的t identical to its parents. Gametes, from each parent, produced by meiosis are required for sexual reproduction. Meiosis capable to create offspring genetically differs from each other.