JAMA 100 Years Ago Section Editor: Jennifer
Reiling, Assistant Editor.
Many theories of the possible determination of sex in the lower animals
have been broached in the last quarter of the century. At times it has seemed
that influences could be brought to bear on the fertilized ovum that would
artificially determine its sex, or at least so influence a number of ova that
the majority of the offspring would be of one sex rather than the other. Prof.
Thomas Hunt Morgan,1 the director of the biologic department of
Bryn Mawr College, and very well known for scientific work of a high order
in embryology, and in the subject of regeneration, has made a review of all
the recent investigations with regard to the determination of sex, and concludes
that so far nothing definite has been discovered, and that very probably the
sex of the embryo is in most cases determined in the ovum or during the process
of fertilization, after which no subsequent influences can change this determination.
THE DETERMINATION OF SEX.. JAMA. 2003;290(24):3304. doi:10.1001/jama.290.24.3304