Here's why:
* DNA contains the genetic blueprint: It holds the instructions for building and maintaining an organism.
* Cloning aims for genetic identity: The goal of cloning is to create a genetically identical copy of an organism.
* Nuclear transfer: In the most common cloning method, the nucleus of a donor cell (containing the DNA) is transferred into an egg cell that has had its own nucleus removed.
While other substances might be present in the transferred material, the DNA is the critical component responsible for the genetic makeup of the resulting clone.
