Biology 1001A Lecture Notes - Lecture 9: Wound Healing, S Phase, Mitosis
4 Dec 2015
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Document Summary
Checkpoints regulate progress through the cell cycle (cells have to stop and wait to prepare for next stage: spindle assembly checkpoint. Chromsomes cannot proceed into anaphase until all chromosomes are attached to spindle. Mitosis checkpoint is another mechanism of into anaphase. Sameness: g1/ s checkpoint fixed before s phase, g2 checkpoint. Cells do not go into s phase until all dna damage is. Make sure cells are actually ready to go into mitosis. Cycling cells: purpose of actively cycling cells. When/where are cells actively cycling in birds. Skin cells, muscle cells all cells that need to be repaired. Meristem tissue: tips of roots, trees. For same reasons growth, wound repair, making gametes: why cells are programmed to die. List of mechanisms to generate genomic diversity: venter individual genome sequence showed 1. 2 million variants. Single nucleotide polymophism: one base pair change.
