lecture 11 - DNA structure Flashcards
1
Q
What are Chargaff’s 2 rules.
A
A=T and C=G
the composition of DNA varies between species
2
Q
What joins the nucleotide monomers together to form a nucleotide.
A
phosphodiester bonds
3
Q
DNA and RNA strands are synthesised in what direction?
A
5’ to 3’
4
Q
What is the Watson-Crick model of DNA structure.
A
- DNA has a double stranded helical structure
- sugar phosphate backbone on the outside
- bases are on the inside
- stabilised by hydrogen bonds
- the two polynucleotide strands are antiparallel
