Purpose: To describe sperm morphology and meiotic segregation in the case of a man with a 46 XY/ 47 XY + 18 mosaic karyotype.
Materials And Methods: A 25-year-old man came to our Centre for semen analysis. Morphological sperm evaluation was performed by light and electron microscopy; meiotic segregation was examined by fluorescence in situ hybridisation (FISH) technique using probes for chromosomes 18, X and Y.
Bull N Y Acad Med
October 1989