Consider the following statements regarding DNA replication and choose the correct answer: 1. The very first requirement of DNA synthesis is the presence of a template or plan along which the new strand is to be constructed 2. The second requirement is of a DNA-dependent-DNA polymerase or simply DNA polymerase enzyme 3. A DNA Pol cannot join two free nucleotides; one of them must be anchored by hydrogen bonds to a DNA strand 4. Replication takes place bidirectionally