WOMENS-HEALTH Messages for July, 2001: Re: 2 sperm 1 egg theory resulting in twins

Re: 2 sperm 1 egg theory resulting in twins

From: Lynn D. Montgomery, MD (anonymous@obgyn.net)
Wed, 11 Jul 2001 11:31:51 -0500 (CDT)

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In reply to: Angel: "2 sperm 1 egg theory resulting in twins"

At Wed, 11 Jul 2001, Angel wrote: >
>Have you ever heard of the 2 sperm theory resulting in TWINS? Can 2
>sperm fertilize 1 egg resulting in monozygotic twins. I was under the
>impression it was 1 sperm 1 egg that splits and that once 1 sperm enters
>the egg allows NO MORE so that these types of deformities will not
>occur. Please help
>
>Is there EVER a CASE when 2 sperm fertilize the SAME egg resulting in a
>baby or babies....

Angel, Dispermy (two sperm, one egg) is one of the theories for triploidy (three of every chromosome, rather than two). This abnormality is associated with a high pregnancy loss rate and is essentially incompatible with life. Monozygotic twins typically result from division of a already fertilized egg dividing, resulting in two embryos with identical genetic information... Lynn

--
Lynn D. Montgomery, MD
Director, Maternal-Fetal Medicine
Rocky Mountain Perinatal Center
Missoula, Montana

**Note:  Opinions expressed here are for educational purposes only and, as such, do not constitute a physician-patient relationship.  This information is not intended to supplant the need for you to consult with your physician prior to choosing therapeutic options and/or interventions.

**Private e-mails cannot be entertained due to time constraints, consequently no private e-mails will receive a response.

**Thank you for your understanding ;-)

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In reply to: Angel: "2 sperm 1 egg theory resulting in twins"

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