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Unformatted text preview: chromosomes. Genes A small segment of DNA that contains the information necessary to construct a protein or part of a protein (polypeptide) is called a gene. Genes are the unit of inheritance. Metaphase ends when chromosomes split, thus doubling the number of chromosomes. M-Cyclin M-Kinase combines with M-cyclin and the active complex initiates several mitotic events: 1. chromosome condensation (coiling) 2. nuclear membrane disintegration 3. the synthesis of the spindle apparatus The active kinase-cyclin complex also activates enzymes that destroy the M-cyclin. Prokaryotes Prokaryotic cells do not undergo mitosis. When the cell divides, the circular chromosome replicates itself (DNA synthesis) and the cell pinches into two. This process is called binary fission ....
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