The DNA molecule unzips in both directions. Topic: DNA replication Objective: DNA replication is when DNA is copied. nucleotide The DNA molecule unzips in both directions.

Replication copies the genetic information. A single strand of DNA serves as a template for a new strand. General Description: DNA is replicated during the S (synthesis) stage during Interphase of the cell cycle…..IS COPIED

LET’S IDENTIFY THE STRUCTURES ON THE RIGHT FIRST PHOSPHATE AND SUGAR BACKBONE BASES FREE FLOATING BASES WITH ENZYME NEW STRAND OF DNA

Proteins carry out the process of replication. 1. Enzyme is called HELICASE unzips the double helix 2. Free-floating bases pair with the exposed bases that have been unzipped nucleotide The DNA molecule unzips in both directions. nucleotide The DNA molecule unzips in both directions.

3. Another enzyme, DNA polymerase, bond the nucleotides together to form the double helix new strand nucleotide

Two new molecules of DNA are formed 4. END RESULT: Two new molecules of DNA are formed original strand new strand Two molecules of DNA Original is blue, new is orange.

DNA REPLICATION EXAMPLE: DS DNA DNA UNZIPPED REPLICATED DNA A-T A- -T A-T A-T T-A T- -A T-A T-A C-G C- -G C-G C-G G-C G- -C G-C G-C A-T A- -T A-T A-T ORIGINAL STRAND HELICASE UNZIPS, NEED NEW BASES DNA POLYMERASE BONDS NEW NUCLEOTIDES TOGETHER C T G A T A T G C C