BIO152H5 Chapter 12: BIO152 - CHP 12
Document Summary
Most cell division results in genetically identical daughter cells. Genome - a cell"s endowment of dna, its genetic information. A prokaryotic genome usually consists of a single dna molecule, eukaryotic genomes usually consist of a number of dna molecules. Before a cell can divide, all of its dna must be copied/replicated and then the two copies must be separated so that each daughter cell ends up with a complete genome. Each eukaryotic chromosome consists of one very long, linear dna molecule associated with many proteins. The associated proteins maintain the structure of the chromosome and help control the activity of the genes. Chromatin - the entire complex of dna and proteins that is the building material of chromosomes. Every eukaryotic species has a characteristic number of chromosomes in each cell"s nucleus. Somatic cells - all body cells except the reproductive cells.
