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- factor (determiner) on a chromosome that influences the development of a hereditary trait
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
- the basic unit of inheritance which occupies a specific chromosomal locus and has a specific function
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
- A locus on a chromosome that encodes a specific protein or several related proteins. It is considered the functional unit of heredity.
- The smallest sequence of a DNA molecule capable of directing protein synthesis or performing a regulatory function.
Source: Biotechnology Glossary
- The gene is the basic physical unit of inheritance. Genes are passed from parents to offspring and contain the information needed to specify traits. Genes are arranged, one after another, on structures called chromosomes. A chromosome contains a single, long DNA molecule, only a portion of which corresponds to a single gene. Humans have approximately 20,000 genes arranged on their chromosomes.