The term 'Hereditary Code Carrier' refers to a GENE, which is a unit of heredity that is passed from parent to offspring and is responsible for the transmission of traits. Genes are made up of DNA, which contains the instructions for the development and functioning of living organisms. Genes are responsible for the characteristics that make each individual unique, such as eye color, hair color, and height. They also play a role in determining a person's susceptibility to certain diseases.