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Replication occurs in three major steps:

the opening of the double helix and separation of

DNA strands, the priming of the template strand,

and the assembly of the new DNA segment. During

separation, the two strands of the DNA double helix uncoil at a specific location called origin.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.