What Important Discovery About DNA Was Made by Irwin Chargaff

Multiple Choice

What important discovery about DNA was made by Irwin Chargaff?

A) The structure of DNA was a double-stranded helix.
B) Chromosomes were DNA-containing structures within the cell.
C) The genetic code consisted of a sequence of 3 bases.
D) DNA replication is a semiconservative process.
E) The amounts of adenine and thymine in all DNA were equal,as were the amounts of guanine and cytosine.