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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: neolib who wrote (232231)	5/10/2005 7:40:55 PM
From: combjelly	Respond to of 1574053

"Some creatures actually change gender as adults (some lizards?)" Don't know about lizards, but changing sex is common in the marine environment. Some flounder can change sex due to temperature. There are many mollusks where the one on the bottom releases hormones that causes any attaching on top of them to become males.

To: neolib who wrote (232231)	5/10/2005 10:26:31 PM
From: tejek	Read Replies (2) \| Respond to of 1574053

Now the next question is why does it happen? Does nature have a purpose? If a "cure" can be found, those questions might not get answered. I also would like to know those answers. In the animal kingdom, there are interesting examples of passive or active control over sexual selection. There was one hint of that in humans IIRC this last year, a study about sex ratio in post WWII Germany??? Higher than expected ratio of boys/girls under economic stress?? Some creatures actually change gender as adults (some lizards?) while the insect world is full of far stranger things, like multiple generations of only females, which reproduce without males, but occassional generations have males. Some, like the scale insects can choose the gender of offspring it would appear. I'm not a biologist, I just pick this tidbits up here and there. I too am intrigued with this stuff. When I was kid I decided to graft the branch of one tree to the branch of a different species and then watched to see if it would grow as two species in one. It did......and that's when I concluded that nature was the product of 'intelligent design'. I have been hooked on the natural sciences ever since. ted