Chromosomes and Cellular Reprodu

Chromosomes and Cellular Reprodu

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Chromosomes and Cellular Reproduction All living organisms can be classified in two major groups Prokaryote and Eukaryote Prokaryote Unicellular, with no compartmentalized cell structure. Prokaryotic DNA does not exist in the highly ordered and packed arrangement. Made up of eubacteria and archaea. Eukaryote Both unicellular and multicellular with compartmentalized cell structure . Its genetic material is surrounded in a nuclear envelope to form a nucleus. DNA is closely associated with histones to form tightly packed chromosomes. Prokaryotic Cell Reproduction Simple division : separation of replicated circular chromosome Origin of replication High rate of replication under optimal conditions bacterial cells divide every 20 minutes Eukaryotic Cell Replication Eukaryotic chromosomes: Each species has a characteristic number of chromosomes Homologous pair - alike in structure and size, and each carries genetic information for the same set of hereditary characteristics
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Chromosomes and Cellular Reprodu

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