Study: MZ twins form after embryo collapses - Mothering Forums

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#1 of 1 Old 07-04-2007, 01:27 AM - Thread Starter
 
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Payne and colleagues found that identical twins are formed after an embryo essentially collapses, splitting the progenitor cells — those that contain the body's fundamental genetic material — in half. That leaves the same genetic material divided in two on opposite sides of the embryo. Eventually, two separate fetuses develop.
Interesting!

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