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DNA Replication

DNA Replication. When cells divide the DNA copies itself to provide genetic code for new cell . DNA Replication. DNA molecule unzips exposing bases Free nucleotides bond to these bases A with T G with C. Enzymes used in process. Helicase – opens & unzips DNA polymerase Builds new strand

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DNA Replication

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  1. DNA Replication When cells divide the DNA copies itself to provide genetic code for new cell.

  2. DNA Replication • DNA molecule unzips exposing bases • Free nucleotides bond to these bases • A with T • G with C

  3. Enzymes used in process • Helicase – opens & unzips • DNA polymerase • Builds new strand • Matches complimentary bases • 2 sets of enzymes

  4. How it works

  5. Ideas Central to Replication • Each strand is a mirror image • Each strand serves as a Template • To copy DNA = Replication

  6. Proofreading by enzymes • Corrects new strand from old • Mistakes can happen • Especially if dividing rapidly

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