• A DNA segment that contributes to phenotype/function. In the absence of demonstrated function a gene may be characterized by sequence, transcription or homology
  NCI Health Level 7 Vocabulary
  U.S. National Cancer Institute, 2018
• A functional unit of heredity which occupies a specific position on a particular chromosome and serves as the template for a product that contributes to a phenotype or a biological function.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• Segment of the genome that codes for a functional product.
  CRISP Thesaurus
  National Institutes of Health, 2006
• Structures on chromosomes that are passed from parent to child. The basic unit of material that passes traits from parent to child.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• The functional and physical unit of heredity passed from parent to offspring. Genes are pieces of DNA, and most genes contain the information for making a specific protein.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• A category of nucleic acid sequences that function as units of heredity and which code for the basic instructions for the development, reproduction, and maintenance of organisms.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Gene, unit of hereditary information that occupies a fixed position (locus) on a chromosome. Genes achieve their effects by directing the synthesis of proteins. In eukaryotes (such as animals, plants, and fungi), genes are contained within the cell nucleus. The mitochondria (in animals) and the...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2020