DNA: Deoxyribonucleic Acid

Watson and Crick

Nitrogen bases make nucleotidesdifferent(A,T,G,C)

Nucleotide is made of a sugar,phosphate anda nitrogen base

DNA is a nucleicacid.The monomer isa nucleotide.

DNA is a double stranded helix

Complimentarybase pairing means:A=T (2)G=C (3)Hydrogen bonds

Chargaff’s rules:#A = #T#G = #C

i.e. 30.9% A 29.4% T 19.8% C 19.9% G

If given A = 30%,can you calculateC?

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Antiparallel Strands

Protein Synthesis

Genetic Code

Transcription: DNARNA

mRNA Processing

Translation: RNAprotein

Translation Termination

Polyribosomes