Sentences with phrase «xy cells»

All this leads to the question of how confident you can be that in the period when sex is being determined, the threshold number of XY cells required for sex / testis determination were truly absent in those putative XO organisms?

Researchers have found XY cells in a 94 - year - old woman, and surgeons discovered a womb in a 70 - year - old man, a father of four.

Some doubt, however, that such a feat would ever be possible — the Hinxton Group, an international consortium of scientists that discusses stem - cell ethics and challenges, concluded that it would be difficult to get eggs from male XY cells and sperm from female XX cells.

Not exact matches

In addition to normal ovarian development, the increased number of gonocytes (fetal and neonatal germ cells) is sufficient for male - to - female sex reversal in XY medaka.

When germ cells are removed in medaka, XX (female) fish show female - to - male sex reversal, while XY (male) fish with excessive germ cells, which is usually associated with egg production, exhibit male - to - female sex reversal.

It is virtually impossible to derive eggs for reproduction from XY (chromosomally male) cells and sperm from XX (chromosomally female) cells.

Singh et al (1985) reported in situ hybridization results with Bkm probes showing a chimera with 90 % XX and 10 % XY testicular cells.