Woman: The most evolved species? - (Mar/14/2007 )
just cos a woman carries the baby doesn't mean she makes it - its 50/50 from the parents
The lost of Y chromosome function means one day human may like bee or some birds using XX and X0 system for reproduction.
So where will the testis-determining factor genes go? remember, the default position for embryos is female, not male.
The whole notion is about as helpful as a parachute for a submarine. Sometimes clever people make really dumb pronouncements.
Anyone saw last night (08-04-28) "NightLine" news program.
They report in UK researchers also reach similar conclusion that Y chromosome will disappear; however, they estimate it will take longer time (a thousand year maybe).
One important clue UK researchers and guy next door to us found is that Y chromosome have difficulty to repair itself, and thus that is why Y chromosome is small and looks like only half of chromosome. And by the time Y chromosome will mutate out of function or just gone.
As I understand although default position for a embryos is female, Y chromosome is not all it require to produce gender male gender-determining factor. For example female/woman can produce testosterone and most of them will convert to estrogen.
And nature do have such animal that do not have Y chromosome and they have no problem of reproduction.
I just focus on Y chromosome in this forum with topic of woman.
Back to the topic, at time Y chromosome disappear, woman of course will further evolve and adapt to reproduction system without using Y chromosome
Just without man the world seems would lost half of fun
Oh yes, human future is the shemale or an androgenic metrosexual woman!? 
Luckily then I'm dead and gone. Don't want to disturb evolution with my Y.
They report in UK researchers also reach similar conclusion that Y chromosome will disappear; however, they estimate it will take longer time (a thousand year maybe).
One important clue UK researchers and guy next door to us found is that Y chromosome have difficulty to repair itself, and thus that is why Y chromosome is small and looks like only half of chromosome. And by the time Y chromosome will mutate out of function or just gone.
As I understand although default position for a embryos is female, Y chromosome is not all it require to produce gender male gender-determining factor. For example female/woman can produce testosterone and most of them will convert to estrogen.
And nature do have such animal that do not have Y chromosome and they have no problem of reproduction.
I just focus on Y chromosome in this forum with topic of woman.
Back to the topic, at time Y chromosome disappear, woman of course will further evolve and adapt to reproduction system without using Y chromosome
Just without man the world seems would lost half of fun
They report in UK researchers also reach similar conclusion that Y chromosome will disappear; however, they estimate it will take longer time (a thousand year maybe).
One important clue UK researchers and guy next door to us found is that Y chromosome have difficulty to repair itself, and thus that is why Y chromosome is small and looks like only half of chromosome. And by the time Y chromosome will mutate out of function or just gone.
As I understand although default position for a embryos is female, Y chromosome is not all it require to produce gender male gender-determining factor. For example female/woman can produce testosterone and most of them will convert to estrogen.
And nature do have such animal that do not have Y chromosome and they have no problem of reproduction.
I just focus on Y chromosome in this forum with topic of woman.
Back to the topic, at time Y chromosome disappear, woman of course will further evolve and adapt to reproduction system without using Y chromosome
Just without man the world seems would lost half of fun
The fact that women produce testosterone is a red herring. Maleness is not determined by the presence of testosterone, but initially by the expression of testis determining factor. Those organisms that don't have a Y chromosome use other systems to separate gender, unless they are one of those species where gender is determined by temperature, for example. Finally, parthenogenesis (production of embryos without another partner) is uncommon, and certainly is not seen in higher mammals.