BIOL 1010U Lecture Notes - Lecture 11: Cleavage Furrow, Cell Division, Umber
Document Summary
Textbook reference: chapter 11 in biology how life works (2nd ed. : sections 11. 1 and 11. 2 pp. Examples: multicellular organisms: process of cell division, single cell two daughter cells. Two important processes: karyokinesis division of nucleus, cytokinesis division of cytoplasm via formation of cleavage furrow, successful cell division requires: 1: full complement of dna must be distributed to the two daughter cells from single parent cell, parent cell mist be large enough to divide in two can still contribute cytoplasmic components to each daughter cells. 11. 1: asexual reproduction, new copy may be identical or have mutations. Examples: prokaryotes (i. e. bacteria) and other single-celled organisms (amoebae, paramecia etc. ) Meiosis: somatic cells, produces exact copies of parental chromosomes, eukaryotic cell division, makes sexual reproduction happen, produces daughter cells (gametes) with half the # of chromosomes compared to parent cells, not exact copies, sexual reproduction, eggs and sperm. 2: cytokinesis, pinching in the plasma membrane; synthesis of new cell wall materials.
