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Campell Biology ch.8 mitosis Flashcards

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286927353cell divisionwhen a cell undergoes reproduction, the two "daughter" cells that result are genetically identical to each other and to the original "parent" cell.
286927354chromosomesthread like structures that have genetic info that is passed down from one generation to the next
286927355asexual reproductionsingle celled organisms that reproduce by dividing in half, and the offspring are genetic replicas
286927356sexual reproductionrequires fertilization of an egg by a sperm
286927357zygotefertilized egg
286927358binary fissiona form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size
286927359chromatinlong strands of DNA found in the eukaryotic cell nucleus; condense to form chromosomes
286927360sister chromatidstwo identical copies of a parent chromosome which are attached to one another at the centromere.
286927361centromerearea where the chromatids of a chromosome are attached
286927362cell cyclethe regular sequence of growth and division that cells undergo
286927363interphasea period between two mitotic or meiotic divisions during which the cell grows, copies its DNA, and synthesizes proteins
286927364prophasefirst and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus
286927365metaphasethe stage in mitosis or meiosis in which the duplicated chromosomes line up along the equatorial plate of the spindle
286927366anaphasethe third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles
286927367telophasethe final stage of mitosis or meiosis, during which a nuclear membrane forms around each set of new chromosomes
286927368cytoknesisThe cytoplasm completely splits, organelles divide and are split between the 2 new cells
286927369miotic spindlefootball-shaped structure of microtubules that guides the separation of the two sets of daughter chromosomes
286927370centrosomesregions of cytoplasmic material that in animal cells contain structures called centrioles
286927371cleavage furrowthe area of the cell membrane that pinches in and eventually separates the dividing cell
286927372cell plateA double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis.
286927373growth factorsignal cell cycle control system
286927374anchorage dependenceThe requirement that a cell must be attached to a substratum in order to divide.

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