Stated Clearly Explanation Going Further Look up the

Stated Clearly Explanation

Going Further: Look up the actual structure of a nucleotide containing your favorite of the 4 bases. Draw the structure on a note card, and identify the places where HBonds can be formed.

Chargaff’s Rule(s) – 1. The amount of Adenine in a strand of DNA will always equal the amount of Thymine. 2. The amount of Cytosine in DNA will always equal the amount of Guanine.

RNA is a single stranded nucleic acid. 5’ 4’ RNA still has a sugar-phosphate backbone and has nucleotides as the repeating subunit. 1’ 3’ RNA has the nitrogenous base Uracil instead of Thymine. 5’ 4’ 1’ 3’ The single strand is held together via covalent bonds. 2’ 5’ 4’ RNA has a 3’ end a 5’ end, similarly to DNA. 1’ 3’ Does Chargaff’s rule apply to RNA? 2’ 2’ 5’ 4’ 1’ 3’ 2’

Rosalind Franklin and Maurice Wilkins worked together to investigate the structure of DNA. Through Franklin’s work, she produced the famous image below, which suggested that DNA is helical, and that the phosphates are on the outside of the helix. R. F. - England Phosphates form the outer ring. TOK: The discovery of DNA structure is a great example of cooperation between nations, but also of the paternal nature of science until recently…. . What was the cause of this? M. W. - New Zealand The bonds in the middle show that there is connections in between the strands. Franklin then gave the image to Wilkins, who shared it with Watson and Crick published the findings first in Nature, and so they are given credit for the discovery of the structure of DNA.

Create a Comic Strip 6 Panels: -Bacteria attached with S 35 -Results of S 35 Expt. -Bacteria attached with P 32 -Results of P 32 Expt. -The Epic Conclusion Submit the Comic Strip on either a whiteboard or a sheet of paper. featuring The Hershey and Chase Experiment