Facts about twins, including how they develop and how you can tell if you have identical or fraternal twins. ... The other big question you get is 'are they identical or fraternal twins?' And answering this question can help you answer the other one about the genetics of twin births.
www.keepkidshealthy.com/twins/expecting_twins.html www.keepkidshealthy.com/twins/expecting_twins.html
Twin - Wikipedia, the free encyclopedia
Twins are two offspring resulting from the same pregnancy, usually born in close succession. They can be the same or different sex. Twins can either be monozygotic (MZ, colloquially "identical") or d...
en.wikipedia.org/wiki/Twin
Definition of fraternal twins in the Medical Dictionary. fraternal twins explanation. Information about fraternal twins in Free online English dictionary. What is fraternal twins? Meaning of fraternal twins medical term. ... In that population of identical and fraternal twins, 447 individuals had CFS and another 1,120...
medical-dictionary.thefreedictionary.com/fraternal+twin... medical-dictionary.thefreedictionary.com/fraternal+twins
Discussions relating to Twins/Multiples - The Uniqueness of Fraternal Twins ... I can attest to the bonds between fraternal twins. I have a set of boy/girl twins that are now 15 yrs old and for the most part inseperable, although it is getting better the older they get. She now has her friends and he has his but their bond...
www.suite101.com/discussion.cfm/9074/53133
The differences between identical and fraternal twins. ... (This last case is an identical situation to fraternal twins as shown below). ... Non-Identical Twins (also known as Fraternal, Binovular or Dyzygotic twins).
www.paternityangel.com/Preg_info_zone/Multiple/Multiple... www.paternityangel.com/Preg_info_zone/Multiple/Multiple1.htm
Fraternal twins; On the other hand, fraternal twins are the result of two different eggs becoming fertilized by two different sperm. Although both zygotes share the same uterus, they are no more similar than any other set of siblings.
www.drspock.com/article/0,1510,5089,00.html
Fraternal Twins are the most common type of twins. They are the result of the union of two eggs and two sperm. They may not look alike and can be different sexes. Fraternal twins can be conceived at separate times and can have different fathers.The tendency to conceive fraternal twins seems to be heredity.
library.thinkquest.org/4210/Fraternal.htm library.thinkquest.org/4210/Fraternal.htm
I say it is possible, though highly unlikely, for fraternal twins to have different fathers. My husband and his friends say this is nonsense. We are relying on you as the final authority in resolution of a $100 bet.
www.straightdope.com/columns/read/474/is-it-possible-fo... www.straightdope.com/columns/read/474/is-it-possible-for-fraternal-twins-to-have-different-fathers