| 释义 |
double helix
noun
: a helix or spiral consisting of two strands in the surface of a cylinder that coil around its axis ; especially : the structural arrangement of DNA in space that consists of paired polynucleotide strands stabilized by cross-links between purine and pyrimidine bases — compare alpha-helix herein watson-crick model herein
• double-helical \¦ ̷ ̷ ̷ ̷ ¦ ̷ ̷ ̷ ̷ ̷ ̷ \ adjective |