Biology 1001A Chapter Notes - Chapter 8: Cell Membrane, Centrosome, Royal Naval Air Service
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17 Dec 2017
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Section 8. 3 mitosis and the eukaryotic cell cycle. Mitosis: division that produces daughter cells that are exact genetic copies of the parental nucleus. Molecular checks ensure order and time progression through cycle. Through the regulation, dna synthesis replicates each dna chromosome into 2 copies. Structural web of cables and motors of the cytoskeleton separates replicated dna into daughter cells (*this aspect of cell division is less likely) Chromosomes info in nucleolus is divided into double stranded dna molecules that have proteins to stabilize dna, help with packaging dna during cell division and influence the expression of genes. Each chromosome is made of 1 dna molecule + its proteins. Most eukaryotes have 2 copies of each type of chromosome in their nucleus and the. 2nd one is said to be a diploid of 2n. o. Haploid- only 1 copy of each chromosome in nucleus. Before division, each chromosome is duplicated one of the 2 exact copies is called sister chromatids.
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