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joja [24]
3 years ago
15

The DNA polymerase reaction occurs in the ________ as incoming nucleotides are added to ________ end(s) of the growing DNA chain

. The DNA polymerase reaction occurs in the ________ as incoming nucleotides are added to ________ end(s) of the growing DNA chain. 3' → 5' direction; the 5'-phosphate 5' → 3' direction; the 3'-phosphate 5' → 3' direction; the 3'-hydroxyl 5' → 3' direction or 3' → 5' direction; both 3' → 5' direction; the 5'-hydroxyl
Biology
1 answer:
nasty-shy [4]3 years ago
5 0

Answer:

5' → 3' direction or 3'- hydroxyl

Explanation:

DNA replication takes place in the direction from 5' to 3' prime because the template strand is read along 3' to 5' direction and complementary strand is made in opposite direction of template strand during replication.

The new nucleotide that is added on the free 3' hydroxyl end of ribose sugar by phosphodiester bond in the new complementary strand. 3' to 5' phosphodiester linkage makes the backbone of polynucleotide.

In DNA synthesis adenine pairs with thymine with two hydrogen bonds and guanine pairs with cytosine with three hydrogen bonds. So the correct answer is 5' → 3' direction or 3'- hydroxyl.

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