Rosalind Franklin helped disprove a tripleÂ­stranded model of this molecule's structure in favor of (*) Watson and Crick's double helix.
NitrogenÂ­14 and nitrogenÂ­15 isotopes were used in an experiment on this molecule by Meselson and Stahl, which supported the semiÂ­conservative model of its replication. Rosalind Franklin helped disprove a tripleÂ­stranded model of this molecule's structure in favor of (*) Watson and Crick's double helix. For 10 points, name this nucleic acid which carries the genetic instructions for life.
NitrogenÂ­14 and nitrogenÂ­15 isotopes were used in an experiment on this molecule by Meselson and Stahl, which supported the semiÂ­conservative model of its replication.
deoxyribonucleic acid (or DNA)