6.1 structure of dna - deoxy/ribose, experiments

difference between ribose and deoxyribose

presence of carbon #2 = ribose, not present = deoxyribose

where is genetic info in dna stored?

nitrogenous bases (a,t,g,c) store and encode data

how are dna monomers joined to form polymers?

dehydration synthesis between 3’ and 5’ - phosphodiester bonds

purine structure (3)

large, 2 ring carbon, contains a,g

pyramidine structure (3)

small, single ring carbon, contains, t,c,u

chargaffs rules

A = T (2 bonds), C = G (3 bonds)

hershey and chase

bacteriophage infections - dna entered cell, proteins do not

meselson stahl experiment

semi conservative replication - centrifuge separated dna molecules by isotope density

x ray crystallography (3)

technique Rosalind Franklin used, stolen by watson and crick, basis of understanding 3d structure of dna