Standard Article


  1. Robert C. Elston

Published Online: 15 JUL 2005

DOI: 10.1002/0470011815.b2a05026

Encyclopedia of Biostatistics

Encyclopedia of Biostatistics

How to Cite

Elston, R. C. 2005. Gene. Encyclopedia of Biostatistics. 3.

Author Information

  1. Case Western Reserve University, OH, USA

Publication History

  1. Published Online: 15 JUL 2005


A commonly accepted definition of a gene is a combination of segments of DNA that together code for a functional unit; but the word is used with other meanings, better differentiated as “locus” and “allele”, depending on the nationality, age, and specific genetic discipline of the writer.


  • chromosome;
  • DNA;
  • locus;
  • allele