DNA Structure and History

DNA Structure and History

YouTube Videos

(DNA History) https://www.youtube.com/watch?v=Qo9gcZ0r8k8\

(DNA Structure) https://www.youtube.com/watch?v=8m6hHRlKwxY&feature=youtu.be

DNA

DeoxyriboNucleic Acid

(Brief) History

James Watson, Francis Crink and Maurice Wilkins got a Nobel prize in 1937 for their contributions to finding out the structure of DNA. Rosalind Frank was also part of this but didn't get a prize because she died before she could receive it.

DNA Structure

DNA is made out of building blocks called nucleotides (monomers). There are three parts of this monomer; a base, a phosphate group and a deoxyribose sugar group. DNA is DOUBLE stranded.

Base pairs

• Adenine (A) always goes with Thymine (T)

• Guanine (G) always goes with Cytosine (C)

• These pairs are held together with hydrogen bonds

• Purines: Two ringed; A and G

• Pyrimidines: One ringed; C and T

• One purine always goes with one pyrimidine