Black & white twins

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We’ve received a lot of search engine traffic over the past few days because of the phenomenon of “black” and “white” fraternal twins (two cases within the last week). Aside from the original post on this blog, I’ve commented on it a few times at my other blog, here, here and here. Also, some of you might find this 20/20 segment on the original British twins interesting, click on the video. I can’t but help wonder if Brazilian readers don’t find the commotion a bit amusing…

5 Comments

  1. I agree this is not unusual. Fraternal twins having different fathers is quite easy to understand conceptually and realistically.

  2. Fraternal twins having different fathers is quite easy to understand conceptually and realistically. 
     
    the likelihood of heteropaternity in the case of the australian case seems quite low. there aren’t many blacks in australia.

  3. In this last case, the difference seems particularly small. Where I come from I think it wouldn’t be regarded as that unusual. I’ve seen cases like it a lot, in ordinary siblings, though (not twins – my twin database being small).

  4. If two caublinasians like Tiger Woods had it going (I mean one male Tiger and one female), and then got quadruplets, is it possible they could be one of each?

  5. If two caublinasians like Tiger Woods had it going (I mean one male Tiger and one female), and then got quadruplets, is it possible they could be one of each? 
     
    the genetic model gets more complex cuz real races are defined by a multidimensional array of traits. but i guess theoretically it could work out that way (though that depends on the race in question, tiger is only 1/8 native american)….

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