BIL 150 Lecture Notes - Lecture 13: Cleavage Furrow, Spindle Apparatus, Nuclear Membrane
10 Oct 2016
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Document Summary
If a cell passes g1, it will most likely continue through other phases. Humans will go from a single sperm cell to 1013 cells. Number of chromosomes in parents cells are equal to the amount in daughter cells; because of replication. Can be stuck together in many ways. Somatic cells are any cells that go through mitosis other than reproductive cells. Interphase consists of g1, s, and g2 phases (90%) Cell grows and replicates its organelles and chromosomes. Starts with pair of centrioles divide and migrating towards the poles. Three layers of proteins outside the centromere. Pulls cell and elongates it before it divides. Duplicated chromosomes arranged in the equatorial (middle) region of the cell. Sister chromatids are separated and moved towards the pole. Animal cells: cleavage, forming a cleavage furrow. Can not form furrows because of cell wall. Vesicles coverage in the center and forms the plate creating new cell wall then divides the two.
