Gemellology


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Gemellology

 

a branch of biology and medicine dealing with the origin of twins (from one fertilized ovum or from different ova) and examining their resemblance and differences from the genetic, morphological, physiological, psychological, and pathological points of view. The so-called twin method, used mainly in the genetic study of man, makes it possible to study the effect on twins of hereditary factors and environmental conditions in the development of normal and pathological characteristics.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.