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When offspring are produced by the fusion of special reproductive cells formed by each of two parents.
lack a nucleus. DNA molecules found in the cytoplasm and contain a single chromosome.
genetic material inside nucleus condenses, the duplicated chromosomes become visible, and a spindle starts to form.
centromeres of duplicated chromosomes line up across cetner of cell, spindle fibers connect to the centromere of each chromosome to the two poles of the spindle.
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