write the dual purpose served by deoxyrobounucleoside truphosphates in polymerisation

Explanation

### Step-by-Step Solution:

1. **Understanding Deoxyribonucleoside Triphosphates (dNTPs)**:
- Deoxyribonucleoside triphosphates are the building blocks of DNA. Each dNTP consists of a deoxyribose sugar, a nitrogenous base (adenine, thymine, cytosine, or guanine), and three phosphate groups.

2. **Role in Polymerization**:
- During DNA replication, dNTPs are incorporated into the growing DNA strand. The polymerization process involves the joining of these nucleotides to form a polynucleotide chain.

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