origin of replication
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or·i·gin of rep·li·ca·tion
a sequence of the bacterial genome required for the initiating of a replicating fork by leading strand synthesis.
Farlex Partner Medical Dictionary © Farlex 2012
origin of replication (ori)the specific site on a DNA MOLECULE where REPLICATION is initiated.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005