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Biology, 18.08.2019 22:00 binava

The two strands of a dna double helix are held together by:
a. ionic bonds.
b. hydrogen bonds.
c. nonpolar covalent bonds.
d. polar covalent bonds.
e. hydrophobic exclusions.

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The two strands of a dna double helix are held together by:
a. ionic bonds.
b. hydrogen...

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