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Introduction. Meiosis, the form of cell division unique to egg and sperm production, sets the stage for sex determination by creating sperm that carry either an X or a Y sex chromosome.his means that when the chromosomes of egg and sperm cells combine at fertilization, the embryo regains the normal diploid number. Meiosis mixes up the parental genes in two ways. First, the members of each chromosome pair come together and swap segments in a process known as crossing over, or recombination.
Someone did infact post the correct answer. The correct answer is that there are 92 chromosomes before meiosis, and after, there are 23 chromosomes in each sex cell produced. Before meiosis the ploidy is 2n and each chromosome is duplicated.The diploid number of humans is 46, and since the chromosomes are duplicated (doubled), the total number of chromosomes is 92. The ploidy of the sex cells produced is n, (haploid, which is 23 in humans) so there are 23 chromosomes per sex cell produced.omeone did infact post the correct answer. The correct answer is that there are 92 chromosomes before meiosis, and after, there are 23 chromosomes in each sex cell produced. Before meiosis the ploidy is 2n and each chromosome is duplicated.