http://www.erogereview.com/2009/02/16/yosuga-no-sora/ Fri, 07 May 2010 00:48:53 -0700 http://wordpress.org/?v=2.9.2 hourly 1 http://www.erogereview.com/2009/02/16/yosuga-no-sora/comment-page-1/#comment-1348 Nargrakhan Wed, 10 Mar 2010 17:44:14 +0000 http://www.erogereview.com/?p=79#comment-1348 @Gambit: Actually it's possible, though super incredibly rare, and the Human Genome Project has a documented case of it happening (although that one resulted in hermaphroditism). Search their website for "semi-identical twins" if you're interested. A lot of things that people used to think was possible and impossible for twins, has been debunked by the DNA project. Of course the siblings won't be truly identical because of their different genders, but they can otherwise be so genetically alike, they're identical for all practical medical purposes outside of those factors. As taken from a medical expert: <br />  Monozygotic (one egg) fertilization can permit even opposite-gender twins to be almost as close, genetically, as true identical twins. This is an inexpressibly unlikely occurrence, however, with two possible means of occurring. <br />  1. For a brother and sister (or other non-identical twins) to be nearly as similar as identical twins, one fertilized egg must split to make them. The female half must reject the previously shared Y, leaving the siblings with identically activated X's that determine most characteristics. <br />  2. Or else an egg must split into two identical halves before a Y and an X (for example) enter separate parts of its genetically identical halves. This is less likely than method 1 to result in nearly-identical twins, as the girl ovum must activate the same X chromosome parts as the male possesses, but she has a whole other X to choose from. <br />  Either way means the twins must have the exact same parts of their shared X chromosome activated. Then, they must both develop within the same protective embryonic sac in the womb, and gain equivalent nourishment from a shared placenta. @Gambit: Actually it’s possible, though super incredibly rare, and the Human Genome Project has a documented case of it happening (although that one resulted in hermaphroditism). Search their website for “semi-identical twins” if you’re interested. A lot of things that people used to think was possible and impossible for twins, has been debunked by the DNA project. Of course the siblings won’t be truly identical because of their different genders, but they can otherwise be so genetically alike, they’re identical for all practical medical purposes outside of those factors. As taken from a medical expert:

 
Monozygotic (one egg) fertilization can permit even opposite-gender twins to be almost as close, genetically, as true identical twins. This is an inexpressibly unlikely occurrence, however, with two possible means of occurring.

 
1. For a brother and sister (or other non-identical twins) to be nearly as similar as identical twins, one fertilized egg must split to make them. The female half must reject the previously shared Y, leaving the siblings with identically activated X’s that determine most characteristics.

 
2. Or else an egg must split into two identical halves before a Y and an X (for example) enter separate parts of its genetically identical halves. This is less likely than method 1 to result in nearly-identical twins, as the girl ovum must activate the same X chromosome parts as the male possesses, but she has a whole other X to choose from.

 
Either way means the twins must have the exact same parts of their shared X chromosome activated. Then, they must both develop within the same protective embryonic sac in the womb, and gain equivalent nourishment from a shared placenta.

]]> http://www.erogereview.com/2009/02/16/yosuga-no-sora/comment-page-1/#comment-1332 Gambit Tue, 09 Mar 2010 02:42:33 +0000 http://www.erogereview.com/?p=79#comment-1332 Nice review, but "identical twins of the opposite sex" made me laugh so hard. You do know, don't you, that such a thing doesn't exist? If the opposite sex, they're fraternal twins (different eggs/sperm) and are absolutely no different than any other siblings. They just happened to be in the womb together. Nice review, but “identical twins of the opposite sex” made me laugh so hard. You do know, don’t you, that such a thing doesn’t exist? If the opposite sex, they’re fraternal twins (different eggs/sperm) and are absolutely no different than any other siblings. They just happened to be in the womb together.

]]> http://www.erogereview.com/2009/02/16/yosuga-no-sora/comment-page-1/#comment-544 Ciel Sun, 29 Nov 2009 16:16:05 +0000 http://www.erogereview.com/?p=79#comment-544 Really nice review dude. Really nice review dude.

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