Molecular Basis of Inheritance MCQ | Class 12 | Biology | Chapter 6 1. DNA is a (a) long polymer of deoxyribonucleotides (b) short polymer of deoxyribonucleotides (c) monomer polymer of deoxyribonucleotides (d) long polymer of ribonucleotides 2. If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6×10 9 bp then the length of the DNA is approximately (a) 2.5 m (b) 2.2 m (c) 2.7 m (d) 2.0 m 3. Which of the following are nucleotides? (a) adenosine, cytidilic acid, cytosine (b) adenylic acid, cytidilic acid, gunaylic acid (c) cytidine, adenine, adenylic acid (d) uracil, thymidine, thymidylic acid 4. A nucleoside differs from in nucleotide. It lacks the (a) base (b) sugar (c) phosphate group (d) hydroxyl group 5. In a DNA strand the nucleotides are linked together by (a) glycosidic bonds (b) phosphodiester bonds (c) peptide bonds (d) hydrogen bonds 6. In DNA 20% bases are adenine ...