SETTING UP OF AN ASYMMETRY INDEX NUMBER IN GERM-CELL DISTRIBUTION BETWEEN GENITAL RIDGES IN HUBBARD CHICK-EMBRYO

  • 1 January 1977
    • journal article
    • research article
    • Vol. 66  (4) , 279-289
Abstract
Germ cell numberings inside the gonadic anlages of Hubbard chick embryos were examined. From stage 23 to stage 26, the germ cell number obviously increases. It is for this period that an asymmetry index number, specific for the Hubbard strain is obtained due to a decrease in the number of gonocytes colonizing the right gonad epithelium. It is for the same period that the medulla differentiates and becomes populated with gonocytes. Such simultaneous events suggest that the gonadic colonization might result from some interactions between the germinal epithelium and the underlying mesenchyme.

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