BIOL 1090 Lecture Notes - Lecture 1: Telophase, Nuclear Space, Prometaphase

• School: University of Guelph
• Department: Biology
• Course: BIOL 1090
• Professor: dr.vamraay,dr,mathur

Document Summary

Cell cycle and mitosis september 9th, 2016. Mitotic cells in the adult would be considered stem cells: neural stem cells, follicle hair stem cells, mammary stem cells, muscle stem cells. Intestinal stem cells: epithelial stem cells, haematopoetic stem cells. Common view of dna is the chromosome during metaphase this is really one chromosome that has (cid:271)ee(cid:374) dupli(cid:272)ated. O(cid:374)e (cid:272)h(cid:396)o(cid:373)atid is the half of the (cid:858)x(cid:859) shaped (cid:272)h(cid:396)o(cid:373)oso(cid:373)e called (identical) daughter chromatids. Cellular organelles and cytoplasmic contents are divided more or less equally between daughter cells. Endoplasmic reticulum and golgi complex are fragmented at the time of division and reformed in the daughter cells. Mitochondria and chloroplasts are randomly divided between daughter cells. However, nuclear chromosomes must be duplicated exactly and distributed equally and exactly to daughter cells. Cell division goes through a set of stages called the cell cycle: cell cycle time can be 30 minutes to several year (some stem cells in the hair, for example).