Question

a DNA molecules has four ends, two on each of the polynucleotide strands. How many of these ends are phosphate groups​

Answer 1

Answer:

In a typical DNA molecule, the two strands that are associated each have one end with a phosphate group and one end with a hydroxyl group. Thus, two of the four ends have phosphate groups. The two strands are anti-parallel in their direction so that the phosphate groups are on opposite ends of the double helix.

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Answer 2

Answer:

In a typical DNA molecule, the two strands that are associated each have one end with a phosphate group and one end with a hydroxyl group. Thus, two of the four ends have phosphate groups. The two strands are anti-parallel in their direction so that the phosphate groups are on opposite ends of the double helix.