Lecture 3 Cell Division

Lecture 3 Cell Division - BBH 133 Cell Division Mitosis...

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Jan 25, 2008 Cell Division Mitosis Cell division for growth, repair o Daughter cells are genetically identical to parent cell Meiosis Cell division for reproduction Produces eggs and sperm and generates genetic variation Chromosomes Chromosomes must replicate before cell division o 2 strands of replicated chromosomes are chromtids o They are genetically identical to each other Cell cycle Interphase- Chromosomes are replicated Mitosis- Division of nucleus and cytoplasm Control of Cell Cycle Most cells divide a limited number of times Telomeres (tips of chromosomes) are degraded with each mitosis Apoptosis Programmed cell death “Death receptor” Receives signal for cell to die- Enzymes in cell begin degrading cell components Stem Cells Totipotent cells- cells that can differentiate into any cell type Meiosis, Gametogenesis and development Meiosis Cell division fro reproduction Diploid cell (2n) 2 haploid cells (1n) o Mitosis 1 (2n)
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This note was uploaded on 03/30/2008 for the course BIOL 133 taught by Professor Cloud during the Spring '08 term at Penn State.

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Lecture 3 Cell Division - BBH 133 Cell Division Mitosis...

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