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lianna [129]
3 years ago
9

Who proposed that the structure of DNA is a double helix with two polynucleotide chains running in opposite directions and held

together by hydrogen bonding between pairs of nitrogenous bases?
Biology
1 answer:
Veronika [31]3 years ago
8 0

Answer:James Watson and Francis Crick

Explanation:

James Watson and Francis Crick with few other scientists proposed that DNA is made up of a double polynucleotide chains that are coil/twisted around each other to forming a helical structure. The two DNA chains runs anti-parallel in opposite direction to each other.

Each strand of the DNA is made up of long chain of nucleotides. Each nucleotide contains a sugars (D-ribose), a phosphate group and a nitrogen base forming the backbone of each DNA strand.

They are both DNA strands are held together by hydrogen bond between pairs of nitrogenous bases.

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