Biology for IGCSE & O level - Biological Molecules (Section 5 - No. 18)
What does a double helix refer to in the context of DNA?
A single strand of DNA
Two strands of DNA twisted together
The phosphate groups in the DNA
The sugar molecules in the DNA
Explanation
The double helix is the characteristic twisted ladder structure of DNA, with two strands intertwined.
Comments (0)
