Why is DNA almost always a right-handed helix? Same with alpha helices, the building blocks of proteins. Chirality, or handedness, is everywhere in biology, but the reasons can be a mystery.

7 He was interested in figuring out how to design molecules that self-assemble to form parallel DNA helices where strands cross over and become part of another double helical line, thus stitching ...

Afterward, only half of the new DNA double helices would be hybrids; the other half would be completely new. Every subsequent round of replication therefore would result in fewer hybrids and more ...

But James Watson and Francis Crick's claim was a valid one, for they had in fact discovered the structure of DNA, the chemical that encodes instructions for building and replicating almost all ...

Precipitation occurs when adjacent DNA helices are affected simultaneously, with the compaction agent not only reducing the helix-helix repulsion but also bridging the helixes. This phenomenon was ...