dna pt 2
Updated: 2/17/2021
dna pt 2

Storyboard Text

  • This movie is about Rosalind Franklin. She used X-ray diffraction to show a clear picture of DNA in 1952. The picture showed that the DNA was coiled, that there were two strands, and the nitrogenous bases are in the center. Her work was stollen by Watson and Crick and she never got the credit she deserved.
  • dna
  • Thats not fair! On the car ride home can you explain how DNA replication works?
  • So, the two strands of DNA are connected by hydrogen bonds between base pairs. DNA replication begins in late interphase. The two strands of DNA separate creating a template for two new strands. The helicase “unzips” the helix. After being unzipped, the DNA polymerase joins the nucleotides together to make DNA and it creates a covalent between the sugars and the phosphates. Finally, it goes over the DNA to make sure there are no mistakes. DNA replication is semi-conservative, which means that the two strands of DNA that were created each have half of the original strand.
  • Of course! Let me know if you have any other questions!
  • Thank you so much! Now I know the structure, history and replication of DNA!