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With all the load on Micah, he starts to get tired too. The main purpose of this step is to make sure that DNA replication has completed without error so that spindle pole bodies can separate. Sexual reproduction provides recombination and variations among the progeny. The SRY of Male sex chromosome direct male development in mammals by inducing the somatic cells of gonadal ridge to develop into testis; Each time a spermatogonium divides it may either undergo mitosis, to maintain the number of spermatogonia, or spermatogenesis. We'll track the growth of our industry; and its relationship to society at large. Cell cycle control must be modified at meiosis to allow two divisions to follow a single round of DNA replication, resulting in ploidy reduction.

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