from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism. Genes undergo mutation when their DNA sequence changes.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A unit of heredity; a segment of DNA or RNA that is transmitted from one generation to the next, and that carries genetic information such as the sequence of amino acids for a protein.
German Gen, from gen-, begetting, in Greek words (such as genos, race, offspring).(American Heritage® Dictionary of the English Language, Fourth Edition)
From German Gen, coined by Wilhelm Ludvig Johannsen from Ancient Greek γενεά (geneá, "generation, descent") from the aorist infinitive of γίγνομαι (gígnomai, "I come into being"). (Wiktionary)