double helix
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
The twisted, ladder-like shape formed by two strands of DNA wound around each other.
Test yourself
Which word fits the gap? "Watson and Crick are best known for describing the _____ structure of DNA."
Answer: double helix
In your own words, what does "double helix" mean?
The twisted, ladder-like shape formed by two strands of DNA wound around each other.
Learn next at B2
- drag force A resistive force that opposes an object's motion through a fluid such...
- dramatic irony A situation in a story where the audience knows something important th...
- dualism The view that something, especially mind and body, consists of two sep...
- ductile Able to be stretched into thin wires or shaped without breaking, used...
- duodenum The first section of the small intestine, just after the stomach, wher...
- dynamic equilibrium A balanced state in which two opposing processes continue to happen at...