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Dallas Woman Births Twins Fathered By Different Men
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Dallas Woman Births Twins Fathered By Different Men |
05/19/09
05/19/09
"And while it sounds rare, recent research indicates that one in 12 non-identical twins are so-called bi-paternal, with a rise in fertility treatment and changing sexual behaviour being blamed."
Which is mind boggling.
05/18/09
[news.sky.com]
05/19/09
Fraternal twins occur in ever 12 in 1000 births, so every 1 in 1000 births resulted in fraternal twins that are really half siblings. If I used the birth rate correctly, this event happens 11 times daily.
05/19/09
05/18/09
See Page 2 paragraph 1.
I guess the second guy's squeegee head didn't work. Singular paternity fail.
05/18/09
I'm more inclined to believe this SciAm article than the crappy Sky News one I quoted below. The idea of "changing sexual behaviour" is so vague and unscientific. There's always been as much infidelity as there is now, and I'm willing to bet the phenomenon of fraternal twins who have different fathers has historically been less rare than assumed.
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05/18/09
I'm glad at least that reputable scientists have differentiated "heteropaternal" conception from that other kind. Those people will be wanting rights someday!
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