In some species, low temperatures produce mainly females, and high temperatures produce mostly males. Jin, W. Access through your institution.
Variation at this gene in For example, in many turtle species, eggs from cooler nests hatch as all males, and eggs from warmer nests hatch as all females. We still have much to research, but we are interested in how our results relate with other TSD species diversity and evolution.
Similarly, injecting eggs with inhibitors of estrogen synthesis will produce male offspring, even if the eggs are incubated at temperatures that usually produce females Dorizzi et al. In the late s, James J. Charnier observed that temperature affected sex ratios, which are the number of females versus males in a population or a single clutch of eggs, of the rainbow Agama lizard, Agama agama.
There are certainly many known examples of fish and amphibians with GSD, in which both high and low incubation temperatures can cause sex reversal.
PCBs can act as an estrogen replacement, causing feminization of sex organs in growing reptiles. The results, which found evidence of TSD in four out of five species, confirmed that some vertebrate species exhibit TSD. We are finally beginning to understand the mechanisms by which this masterpiece is created.
The consequences of TSD on fitness, or reproductive success, are largely unknown.
A plethora of discoveries relating to sex influences on brain function is rapidly moving this field into the spotlight for most areas of neuroscience. Quinn, J. Stowers, L. Alternative splicing Also known as differential splicing.