Answer:
During DNA replication two nucleobases form a pair.
- Step-by-step explanation:
- In the four-step process of DNA replication, the second step of 'Primer Binding' consists of a comparatively simple operation of the base pairing.
- In this operation, two nucleobases bond together to form a pair with the help of hydrogen bonds.
- According to the Chargaff's rules, during the operation of base pairing, the guanine in the strand bonds with the cytosine and the adenine in the strand bonds with the thymine.