chapter 12 outline 2

chapter 12 outline 2 - The Key Roles of Cell Division •...

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The Key Roles of Cell Division Cell cycle- life of a cell from the time it is first formed from a dividing parent cell until its own division into two cells. Passes identical genetic material to cellular offspring Cell division to reproduce and for renewal and repair Cell Division Results in Genetically Identical Daughter Cells Cell division involves the distribution of identical DNA to two daughter cells (cell duplicates DNA, allocates the two copies to opposite ends of the cell and then splits into daughter cells) Cellular Organization of the Genetic Material o Genome- cell’s genetic information Prokaryotic genomes consist of a single long DNA molecule Eukaryotic genomes are enormous o Replication and distribution of a large amount of DNA is manageable because DNA molecules are packaged into chromosomes Nuclei of human somatic cells each contain 46 chromosomes made up of two sets of 23 (one set from each parent) Gametes (reproductive cells) each have one set of 23
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chapter 12 outline 2 - The Key Roles of Cell Division •...

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