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marta [7]
3 years ago
11

The backbone of the double helix has an alternating molecules. what do you call these alternating molecule?

Biology
1 answer:
aivan3 [116]3 years ago
5 0

This backbone is composed of alternatingsugar and phosphate groups, and defines directionality of the molecule. Thesebonds are called phosphodiester bonds, and the sugar-phosphate backbone is described as extending, or growing, in the 5' to 3' direction when the molecule is synthesized.

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