1.

The pairs of bases in \[DNA\] are held together by [NCERT 1978; DPMT 1985; CBSE PMT 1992]

A.                 Hydrogen bonds
B.                 Ionic bonds
C.                 Phosphate groups          
D.                 Deoxyribose groups
Answer» B.                 Ionic bonds


Discussion

No Comment Found

Related MCQs