BIOL 1105 Lecture Notes - Lecture 15: Spindle Checkpoint, Genetic Recombination, Homologous Chromosome
13 Nov 2017
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Document Summary
To pass on enough information for daughter cells to survive. Duplicated strand then moves to another location within the cell, stretching it out. Plasma membrane then begins to pinch inward. Cell is completely split into 2 cells. Cell starts to break down some structures in order to prepare for the division of chromosomes. Mitotic spindle begins to capture and organize the chromosomes. Chromosomes finish condensing and are very compact. Nuclear envelope breaks down, releasing the chromosomes. Spindle has captured all of the chromosomes. Sister chromatids separate and go to opposite sides of the. Poles are separated and cell grows longer. Cell begins to reestablish structures for cytokinesis. Cytoplasm is divided to form 2 new cells. In plant cells - cell plate is formed. Chromosome number is not related to chromosome complexity. Gain or loss of chromosomes is usually fatal. Particular array of chromosomes in an individual organism. Arranged according to size, staining properties, or location of the centromere.
