Which moieties of nucleosides are involved in the formation of phosphodiester linkage present in dinucleotides? What does the word diester in the name of linkage indicate? Which acid is involved in the formation of this linkage?

Explanation

### Step-by-Step Solution:

1. **Understanding Nucleosides and Nucleotides**:
- A nucleoside consists of a nitrogenous base (either a purine or a pyrimidine) attached to a sugar molecule (ribose or deoxyribose).
- When a phosphate group is attached to the sugar of a nucleoside, it forms a nucleotide.

2. **Formation of Dinucleotides**:
- A dinucleotide is formed when two nucleotides are linked together.
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