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
THE DETERMINATION OF SEX.. JAMA. 1903;XLI(26):1578–1579. doi:10.1001/jama.1903.02490450010004
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