1 / 10

DNA : REPLICATION

DNA : REPLICATION. SOAR Charter Academy Mr. Najera. DNA?. Stands for : DEOXYRIBONUCLEAIC ACID. Structure of DNA. Discovered by James Watson and Francis Crick in 1953 with the help of Rosalind Franlin’s x-ray photography. DNA: Structure.

Download Presentation

DNA : REPLICATION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. DNA : REPLICATION SOAR Charter Academy Mr. Najera

  2. DNA? • Stands for : DEOXYRIBONUCLEAIC ACID

  3. Structure of DNA • Discovered by James Watson and Francis Crick in 1953 with the help of Rosalind Franlin’s x-ray photography.

  4. DNA: Structure • DNA strands are tightly wound around proteins. These proteins support the structure. • Looks like a twisted ladder.

  5. “Sides of the Ladder” • Molecules of sugar called Deoxyribose alternating with molecules called phosphates. (salts)

  6. “Steps of the ladder” • Made up of four different nitrogen bases. (molecule paired with nitrogen) which pair up with a partner base. • ADENINE • THYMINE • GUANINE • CYTOSINE

  7. “Partner bases”-the steps of the ladder • ADENINE only with THYMINE • GUANINE only with CYTOSINE A-T and G-C

  8. REPLICATION-copying DNA • DNA unwinds like a zipper. • Nitrogen bases pair with their partners backwards. • Results in two exact copies of the original.

  9. REPLICATIONnew strands called complimentary strands.

More Related