एक एकल-कोशिका वाले निषेचित अंडे को क्या कहा जाता है?

Why is it important for DNA copying in a reproducing cell to be accompanied by the creation of an additional cellular apparatus?

The cell which results after the fusion of the _____ is called a zygote.

What is the primary function of replicating the genetic blueprint (DNA) during the process of reproduction?