Counting to 1000

**James Deuce** · 1st December 2007, 22:58

**DingoZ** · 1st December 2007, 23:16

**terbang** · 2nd December 2007, 02:30

Journal of Endocrinology, Vol 141, Issue 2, 295-299
Copyright © 1994 by Society for Endocrinology

Articles

Putative aromatase inhibitor induces male sex determination in a female unisexual lizard and in a turtle with temperature-dependent sex determination
T Wibbels and D Crews

Treatment of developing embryos of two diverse species of reptiles with fadrozole (a potent and specific nonsteroidal inhibitor of aromatase activity in mammals) resulted in the induction of male sex determination. In the first experiment, males were produced in an all-female parthenogenic species of lizard (Cnemidophorus uniparens). In the second experiment, male sex determination was induced in a turtle (Trachemys scripta) with temperature-dependent sex determination. The results support the hypothesis that the endogenous production of oestrogen may represent a pivotal step in the sex determination cascade of reptiles. Further, the production of male C uniparens indicates that the genes required for male sexual differentiation have not been lost in this parthenogenic lizard.

**James Deuce** · 2nd December 2007, 08:22

**Bren** · 2nd December 2007, 08:34

**terbang** · 2nd December 2007, 10:21

[YOUTUBE]http://www.youtube.com/watch?v=kBjUDCyDCuI[/YOUTUBE]

**Steam** · 2nd December 2007, 10:43

.............................

**RT527** · 2nd December 2007, 10:48

Um ...wheres 30....It goes from nighthawks 28, to jim2 `s pic, then martys stop cheating post then nighthawks again , which is 31 ....so which is missing 29, or 30?...