Which of the following is not part of a chromosome?

A. A strand of DNA

B. A gene

C. Many proteins

D. Many strands of RNA

The option that is not part of the chromosomes is D. Many strands of RNA

Explanation:

Chromosomes can be described as structures made up of DNA that is coiled around proteins called histones. The genes are made up of NA and are present on the chromosomes. Each chromosome carries alleles of different genes. Hence, all other options A) A strand of DNA. B) A gene C) Many proteins are all part of a chromosome except for the option D) Many strands of RNA.

RNA is not a part of the chromosomes. The DNA is transcribed into RNA though.