2 years ago

Why is the structure of dna called a double helix?

1 answer:

4 0

The structure of DNA is called a double helix because DNA is made up of two strands of nucleotides wound together in a spiral.

DNA has two strands that run opposite of each other and twist together much like a twisted ladder. Each backbone of the ladder is made up of alternating groups of sugar and phosphate groups.

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