Answer: gene
Step-by-step explanation:
A gene is the correct answer. A page is a small part of a book, while a gene is a small part of the genome. The genome is the complete set of genetic material present in an organism, and it contains all of the genes that make up the organism's inherited traits. Genes are made up of DNA and are located on chromosomes within the cell nucleus. They contain the instructions for making proteins, which perform a wide range of functions in the body.