How was it determined that the structure of DNA is a double helix with the two strands held together by hydrogen bonds formed between complementary nitrogenous bases?

Chargoff's rules states that which nucleotide pairings occurred?

Which of the following is NOT true regarding the structure of the DNA double helix?

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

What term is used to describe the polarity of two DNA strands in a duplex?

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

What term is used to describe the pattern of base pairing between one DNA strand and its partner in a duplex?

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

Is the bond in part (f) a covalent or a noncovalent bond?