Which one of the following is not a process of $DNA$ replication

Assertion : The uptake of $DNA$ during transformation is an active, energy requiring process.

Reason : Transformation occurs in only those bacteria, which possess the enzymatic machinery involved in the active uptake and recombination

The function of chromosomes of carrying the genetic information from one cell generation to another is performed by

When one or more genes are missing from middle part of chromosome, it is called

The chemical knives of $DNA$ are

Assertion: Polytene chromosomes have a high amount of $DNA$.

Reason: Polytene chromosomes are formed by repeated replication.