BIOL 260 Lecture Notes - Lecture 7: Cytokinesis, Cleavage Furrow, S Phase
29 Sep 2016
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Mitosis: produces two genetically identical daughter cells through prophase, metaphase, anaphase, and telophase. Prophase: dna comes condensed to where you can visibly see them under a microscope. The nuclear envelope breaks down, releasing the dna free into the cell. Also, centrioles multiply and move to opposite ends of the cell. They then begin to form spindle fibers and chromosomes are about to move toward the middle of the cell. Metaphase: chromosomes are lined up in the middle of the cell along the metaphyseal plate. The spindle fibers have reached out and connect to the kinetochores on either side of the chromosomes. Anaphase: sister chromatids are pulled apart and are moving toward opposite ends of the cell. Now the number of chromosomes have officially doubled in the cell. Telophase: the new sets of chromosomes have nuclear envelopes forming around them. The cell now looks like it has two nuclei. Along with telophase comes cytokinesis which some people couple together.
