BIOL 1201 Lecture Notes - Lecture 3: Abo Blood Group System, Spindle Checkpoint, Rh Blood Group System
28 Nov 2016
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Document Summary
Be sure you can complete the worksheets on cell division. Review the material in the cell division summary sheet. Centromeres: area of attachment between two sister chromatids. Kinetochores: structure of proteins and specific sections of chromosomal. Point of attachment for microtubules of the spindle. Spindle apparatus: formed from microtubules extending from the two centrosomes. As centrosomes move away from each other the microtubules lengthen. Stop and go-ahead signals regulate the cycle: g1- check to see if dna is damaged, g2 check to see if dna is replicated properly, m spindle assembly checkpoint, check for alignment of. What occurs in g1, s and g2 phases: g1: when synthesis of cell components occurs, increase in number of organelles, s: synthesis (replication of dna). Doubling of the genetic material: g2: centrioles replicate in animal cells. Most cells in the human body are non-dividing.
