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27 November, 19:23

The two strands of dna are hold together by

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  1. 27 November, 22:14
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    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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