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alex41 [277]
3 years ago
7

The two strands of dna are hold together by

Biology
1 answer:
yulyashka [42]3 years ago
5 0

Answer:

Weak hydrogen bonds and Covalent Bonds

Explanation:

The DNA double helix is held together by two types of bonds, covalent and  hydrogen. Covalent bonds occur within each linear strand and strongly bond the  bases, sugars, and phosphate groups (both within each component and between  components). Hydrogen bonds occur between the two strands and involve a base  from one strand with a base from the second in complementary pairing. These  hydrogen bonds are individually weak but collectively quite strong

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