Cicely522 Cicely522

24-02-2015
Biology

contestada

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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makaylamcmahan makaylamcmahan

24-02-2015

B. hydrogen bonds. but theres 2 bonds holding double helix together the other one is colvant bonds.

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