When Watson and Crick were first proposing their model for

Last updated: 7/29/2022

When Watson and Crick were first proposing their model for DNA, they thought that the nitrogenous bases paired like with like (ie adenine with adenine). This turned out not to be feasible because it would cause all base pairing to be the same in length. the identical structure of the bases would not allow hydrogen bonding between them. the sequence of bases in the molecules would be affected. All of the above are correct.