A Moment of Science

Posts tagged umbilical cords

February 23, 2007

 

identical twin baby girls

Monoamniotic Twins

Did you know that there are other kinds of twins besides fraternal and identical?

September 27, 2003

 

Monoamniotic Twins

Fraternal is when two different eggs are fertilized by two separate sperm. And even though fraternal twins can look very much alike, on average they only share fifty percent of their genes, the same as any other siblings.

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