Final answer:
Chromatin is the genetic material that appears like a thread in the nucleus. It consists of DNA, proteins, and RNA molecules, and condenses to form chromosomes during cell division.
Step-by-step explanation:
The genetic material appearing like a thread in the nucleus is known as chromatin. Chromatin is a complex of DNA, proteins, and RNA molecules that packages and organizes the genetic material in the nucleus of cells. It consists of long, thin fibers that condense to form chromosomes during cell division. These chromosomes contain the genetic information necessary for the development and functioning of an organism.
Learn more about Genetic material in the nucleus