The frequency of N multiple births from natural pregnancies has been given as approximately 1:
In DecemberDurban sex Waldrop also gave birth to sextuplets — three boys and three girls — at a hospital in Alabama.
The pregnancies of the 10, 11 and 15 fetuses have all resulted from fertility medications and assisted reproductive technology ART.
Each fertilized egg zygote may produce a single embryo, or it may split into two or more embryos, each carrying the same genetic material.
With two babysitters covering the nowmonth old sextuplets and the older kids in school, TODAY Parents caught up with the Waldrop parents on the phone.
I love how they never get angry with each other even when they look exhauste
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Obstetrics and Gynecology.
Monozygotic identical twins do not run in families.
In this case the original zygote divides into two, and then one of those two zygotes divides again but the other does not; this is the rarest scenario.