| 1. | Sex reversal, which occurs in a fish's embryo stage, is not uncommon.
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| 2. | Embryonic exposure in turtles to various PCBs causes a sex reversal.
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| 3. | Male to female sex reversal, however, does not occur because Leydig cells remain normal.
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| 4. | With no FGF9, there is a full sex reversal.
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| 5. | With no FGF2, there is a partial sex reversal.
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| 6. | Ultimately it causes female to male sex reversal.
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| 7. | The sex ratios are female biased because xenoestrogens interrupt gonadal configuration causing complete or partial sex reversal.
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| 8. | Mice lacking the homolog gene displayed a male-to-female sex reversal phenotype, which suggested a role in testicular embryogenesis.
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| 9. | And they say the sex reversal may help explain some of the difficulties Columbia salmon have had in reproducing.
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| 10. | They seem to exhibit partial protandric sex reversal in that smaller individuals are mostly males but females predominate among larger individuals.
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