A small section of DNA that can be inherited is called a "gene".

Explanation:

• Genes are the basic physical and functional units of heredity.
• They are made up of DNA and contain the instructions to make molecules, such as proteins, that help the body function.
• Each gene occupies a specific location on a chromosome and can vary slightly between individuals in forms called alleles. This variation contributes to inherited characteristics.

Thus, the inherited sections of DNA responsible for passing traits from parents to offspring are known as genes.