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Biology: Chapter 103

Chapter 10.3 Vocabulary

TermDefinition
DNA Replication the process by which DNA is copied in a cell before a cell divides by mitosis, meiosis, or binary fission
Helicase enzymes that separate DNA strands in the first step of DNA replication
Replication Fork the Y-shaped region that results when the two strands separate
DNA Polymerase enzymes that add complementary nucleotides during the second step of DNA replication, found floating freely inside the nucleus, to each of the original strands
Semi-Conservative Replication in each new DNA double helix, one strand is from the original molecule, and one strand is new
Mutation a change in the nucleotide sequence of a DNA molecule
Created by: truongm19