The backbone of a polynucleotide chain is formed by which of the following?
- ANitrogenous bases and pentose sugar
- BPhosphate group and pentose sugar
- CNitrogenous bases and phosphate group
- DNitrogenous bases,phosphate group,and pentose sugar
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Column-$I$ Column-$II$ $(a)$ $\phi \times 174$ bacteriophage $(i)$ $48502 \ \text{b.p}$ $(b)$ Human (diploid) $(ii)$ $5386$ bases $(c)$ $E. coli$ $(iii)$ $6.6 \times 10^9 \ \text{b.p}$ $(d)$ $\lambda$-phage $(iv)$ $4.6 \times 10^6 \ \text{b.p}$
| Column-$I$ | Column-$II$ |
|---|---|
| $(a)$ $\phi \times 174$ bacteriophage | $(i)$ $48502 \ \text{b.p}$ |
| $(b)$ Human (diploid) | $(ii)$ $5386$ bases |
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| $(d)$ $\lambda$-phage | $(iv)$ $4.6 \times 10^6 \ \text{b.p}$ |
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$\quad P \quad Q$
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