Cell Division Key Words.docx

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Biological Sciences
BIOL 1000

Cell Division: Why – Reproduction, growth or repair. Binary Fission: Asexual reproduction by division of one cell or body into two equal or nearly equal parts. Septum: A wall between two cavities. Septation: In prokaryotic cell division, the formation of a septum where new cell membrane and cell wall is formed to separate the two daughter cells. Mitosis: Somatic cell division, nuclear division in which the duplicated chromosomes separate to form two genetically identical daughter nuclei. Chromatin: The complex of DNA and proteins of which eukaryotic chromosomes are composed; chromatin is highly uncoiled and diffuse in interphase nuclei, condensing to form the visible chromosomes in prophase. Heterochromatin: The portion of a eukaryotic chromosome that is not transcribed into RNA; remain condensed in interphase and stains intensely in histological preparations. Euchromatin: The portion of a eukaryotic chromosome that is transcribed into mRNA; contains active genes that are not tightly condensed durin
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