the process of cell division
the process of cell division
- Created by: abdulraouf
- Created on: 10-02-13 15:13
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- the process of cell devision
- Chromosomes
- Packages of DNA called chromosomes hold a cell's genetic information.
- Prokaryotic chromosomes consist of a single, circular strand of DNA
- Eukaryotic chromosomes are highly organized structure
- the DNA winds around histone proteins, forming chromatin
- Chromosomes make the precise separation of DNA possible during cell devision
- Cytokinesis
- Cytokinesis differs in plant cells and animal cells
- in plant cells, a cell plate forms, followed by a new cell membrane, and finally a new cell wall forms
- in animal cells, the cell membrane draws in and pinches off
- the division of the cytoplasm
- Cytokinesis differs in plant cells and animal cells
- the cell cycle
- the cell cycle is the series of events in the growth and division of a cell
- in the prokaryotic cell cycle, the cell grows, duplicates its DNA, and divides by pinching in the cell membrane
- The eukaryotic cell cycle has four stages
- G1 phase: the cell grows
- M phase: the cell divides into two stages -- mitosis and cytokinesis
- mitosis
- the division of the cell nucleus
- Mitosis occurs in four stages
- Prophase: a cell's genetic material condenses, a spindle starts to form, and the nuclear envelope breaks down
- Anaphase: sister chromatids separate and move toward centrioles
- Metaphase: the duplicated chromosomes line up and spindle fibers connect to the centromeres
- Telophase: the chromosomes begin to unwind and a nuclear envelope reforms
- Chromosomes
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