Posted by on 5 July 2007 at 1:37 pm  Science
Jul 052007

These time lapse photographs show the exact moment when one embryo divides into two identical twins.

If you’re a Christian conservative, presumably this is also the exact moment that God infuses a second soul. I don’t know how he decides which twin keeps the original and which twin gets the new one.

(Via KevinMD.)

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