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Re: Disappearing twin?From: Philippe Jeanty (Jeanty@TheFetus.net)Fri Feb 15 12:50:00 2002
Hum the story is a little different. About 70% of twin do not continue as twin, with spontaneous loss of one twin. This is the vanishing twin phenomenon. The egg story: I believe you heard that the asymmetrical division of meiosis that results in the ejection of part of the genetic material (the polar body) may also be fertilized. This has been considered to be a reason for acardiac twins. This is somewhat different from what you mentioned. -----Original Message----- From: ultrasound@obgyn.net [mailto:ultrasound@obgyn.net]On Behalf Of JPeck39@aol.com Sent: Friday, February 15, 2002 10:49 AM To: Multiple recipients of list ULTRASOUND Subject: Disappearing twin? I read that about 70% of all pregnancies start out as twins, however only about 1% of delieveries are live births. Also, I read that with each ovulation, the egg divides in two and can be fertilized by two separate sperms, thus having the babies identical on the mother's side and fraternal on the father's side or in other words, half identical. Can either of these theories be documented? Thank you. Joy Peck
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