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KEY CONCEPT DNA replication copies the genetic information of a cell.

DNA replication is a crucial process in which the genetic information of a cell is duplicated. This process ensures that each body cell receives a complete set of identical DNA. Proteins and enzymes play essential roles in unwinding and duplicating the DNA molecule, while DNA polymerase enzymes bond nucleotides together to form the double helix. DNA replication is semiconservative, with one conserved strand and one newly formed complementary strand.

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KEY CONCEPT DNA replication copies the genetic information of a cell.

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  1. KEY CONCEPT DNA replication copies the genetic information of a cell.

  2. Replication copies the genetic information. • A single strand of DNA serves as a template for a new strand. • The rules of base pairing directreplication. • DNA is replicated during theS (synthesis) stage of thecell cycle. • Each body cell gets acomplete set ofidentical DNA.

  3. nucleotide The DNA molecule unzips in both directions. Proteins carry out the process of replication. • DNA serves only as a template. DNA just stores the information. • Enzymes and other proteins do the actual work of replication. • Enzymes unzip the double helix. • Free-floating nucleotides form hydrogen bonds with the template strand.

  4. nucleotide new strand DNA polymerase • DNA polymerase enzymes bond the nucleotides together to form the double helix. • Polymerase enzymes form covalent bonds between nucleotides in the new strand.

  5. new strand original strand Two molecules of DNA • Two new molecules of DNA are formed, each with an original strand and a newly formed strand. • DNA replication is semiconservative. One strand is conserved and the complementary strand is new.

  6. There are many origins of replication in eukaryotic chromosomes. Replication is fast and accurate. • DNA replication starts at many points in eukaryotic chromosomes. • DNA polymerases can find and correct errors.

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