Notes 10-26-09

Properties of DNA
a) supercoiled
b) double stranded- antiparallel strands (pointed in different directions)
DNA: sugar phosphate backbone attached to bases
c) semiconservative replication- one strand of the DNA that is replicated is from the original DNA
Steps of DNA Replication
-Bacterial circular chromosome is supercoiled; for DNA replication to begin somewhere it must be unwound and unzipped