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Genetics  (Expert Forum)
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are twins possible for me?
Answered by
Lisa Kessler, MS, CGC - Hereditary Disorders, hemochromatosis, Patient Outreach
DNA Direct
Welcome to the Genetics Forum! Questions in the Genetics Forum are being answered by genetic experts from AccessDNA. This forum is for questions and support regarding a person’s predisposition to a variety of medical conditions such as Ashkenazi Jewish Diseases, Bleeding Disorders, Blood Clotting Disorders, Cancer Genetics and Hereditary Cancer Syndromes, Chromosome Abnormalities, Congenital Birth Defects, Cystic Fibrosis, Family History, Fragile X Syndrome, Infertility, Newborn Screening, Rare Genetic Disorders, Prenatal Screening and Testing. This forum is for questions and support regarding a person’s predisposition to a variety of medical conditions such as Alzheimer’s Disease, Blood-clotting Disorders, Breast Cancer, Cystic Fibrosis, Diabetes, Marfan Syndrome, Ehlers-Danlos Syndrome, etc.

are twins possible for me?

by inquiringone, Oct 23, 2007 11:02PM
I am a 21 yo Female, I had an all natural vaginal birth almost 2 years ago. I am Rh factor negative and had several shots through out my pregnancy since my husband is Rh factor positive. He has twin sisters a little over 3 years younger and my 2nd cousin had twin boys. What are my chances of conceiving twins? Oh and my grandma on my father's side had sisters that had twins and one of her aunts had twins and some other had triplets.

Thank you in advance and take care.
Mrs. S

by Lisa Kessler, MS, CGC, Oct 24, 2007 12:14PM
To: Mrs. S.
Thank you for your question.  Having monozygotic twins is not typically something that runs in families.  However, having dizygotic twins does run in families and happens more frequently after the second pregnancy.   If the twins in your families are dizygotic, then your chance of having twins is higher than someone without that family history.  
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