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Chapter 4: Cell Growth and the Division of the Cell (Growth Phase of the…
Chapter 4: Cell Growth and the Division of the Cell
Growth Phase of the Cell Cycle
S Phase
Entire complex of genes for an organism is called a genome
Involves formation of chromosomes, endoreduplication, gene amplification, and the use of the centromere and telemere
Called the Synthesis Phase - genes in the nucleus are duplicated
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DNA winds around each histone cylinder and then forms into a compact arrangement
G2 Phase
Lasts only 3-5 hours
Alpha and beta tubulins are synthesized
Occurs after S Phase - Cells prepare for division
Cell produces factors necessary to start nuclear division
G1 Phase
First phase after division
Cell recovers from division and conducts most of its normal metabolism
Generally the longest part of the cell cycle
Chromatin and centrioles are used
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G1, S, and G2 Phase makes up the interphase portion of the cell cycle
Division Phase of the Cell Cycle
Mitosis
Duplication Division
4 more items...
Meiosis 1 and 2
2 sex cells fuse together
Metaphase 1and 2
Anaphase 1 and 2
Prophase 1 and 2
Telophase 1 and 2
Less Common Types of Cell Division
Cytokinesis
The cytoplasmic division of a cell at the end of mitosis or meiosis this eventually brings about the separation into two daughter cells.
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Karyokinesis
division of a cell nucleus during mitosis.
