Number of Germ Cells in Known Male and Known Female Genotypes of Vertebrate Embryos ( Oryzias latipes )
- 1 June 1973
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 180 (4089), 963-964
- https://doi.org/10.1126/science.180.4089.963
Abstract
The number of primordial germ cells in embryos of known genotypic sex was the same in XY males and XX females until the gonad became recognizable as testis or ovary. It has been claimed that the heterogametic sex chromosome causes the gonad to differentiate as a testis in mammals and as an ovary in birds as a result of earlier and more mitoses. This claim was not supported in the present study where a sex difference in numbers of germ cells was first noted during differentiation of oocytes in the XX embryos.Keywords
This publication has 4 references indexed in Scilit:
- Sex Determination in Birds and MammalsNature, 1971
- Do Genes determine Sex?Nature, 1969
- THE NUMBERS OF VERTEBRATE PRIMORDIAL GERM CELLSBiological Reviews, 1967
- Artificial induction of functional sex‐reversal in genotypic females of the medaka (Oryzias latipes)Journal of Experimental Zoology, 1958