How does DNA Replication happen? Step 1 : An called helicase, the DNA molecule which the bonds that hold the base pairs together. When the bonds break and the separate, the for the new DNA molecule is .

Step 2 : Free- , one by one, with the bases on the template strands. DNA help the bases their correct , As with Ts and Cs and Gs, and them together.

END RESULT : new DNA molecules, each made up of one strand of the original DNA molecule along with a newly formed matching strand.

DNA replication is called because each DNA molecule is made of one old strand and one complimentary new strand. Each new molecule is identical to the original molecule of DNA.