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Malefemale twins are the most common result, 50 percent of dizygotic twins and ... Monozygotic (MZ) or identical twins occur when a single egg is fertilized to ...

Identical Twins of Different Genders - Twins and Multiples - About.com


Identical (monozygotic) twins are always of the same sex because they form from a single zygote that contains either male (XY) or female (XX) sex chromosomes ...

Identical twins CAN be opposite genders! - BabyandBump


This video excerpt from their site says: Identical twins are. ... This can also happen when the egg is fertilized with the male chromosome, making ...

Can you have identical twins that are male and female? | Yahoo Answers


Jan 29, 2009 ... My boss says that ameoba seperation causes identical twins, but that they can be 1 male and one female. I told him he's insane. Please help ...

Re: can identical twins be of opposite genders?


Jul 11, 1999 ... There have been rare reports of male and female "identical twins" (see references below). Truly, none of the twins is genetically identical as ...

Developmental Biology 10e Online: Non-identical Monozygotic Twins


If the aneuploidy were for the X chromosome, one twin might by male (XY or XYY ) while the other would be female (XO). Such male/female "identical twins" have ...

Can a male and a female twin be identical, not fraternal? - Askville


This seems absolutely impossible to me, but a woman said she saw a ... Fraternal twins come from 2 different eggs fertilized with 2 different sperm ...

Types of Twins : Identical, Fraternal & Unusual Twinning | Twin ...


However. it is only the female that has any influence on the chances of having fraternal twins as the male cannot make her release more than one ovum.

human biology - Are there records of monozygotic twins in which ...


Dec 26, 2012 ... In theory you should get what would be about as close as possible to male/ female identical (monozygotic twins). However, I don't believe it ...

Can a male and a female be identical twins? - Quora


Identical (monozygotic) twins are nearly identical in terms of genetics, so are almost always the same sex. The exceptions come from very unusual events such...

Popular Q&A
Q: Can identical twins be male and female?
A: The answer is sort-of.In order for this to happen the chromosomes must be very defective to begin with.Not healthy at Read More »
Source: www.chacha.com
Q: Can Identical twins be male and female?
A: Generally no. Only fraternal twins (who come from different egg-and-sperm pairs) can be different genders, except under special circumstances, such as when ther... Read More »
Source: answers.yahoo.com
Q: Which kind of twins are more identical male twins or female twins...
A: Sex has nothing to do with it. Twins can be either monozygotic (identical) or dizygotic (fraternal). If they're identical, then they share 100% of their DNA, re... Read More »
Source: answers.yahoo.com
Q: Can you have identical twins that are male and female?
A: The idea of boy/girl identical twins was not seriously undertak... Read More »
Source: www.chacha.com
Q: What is the scientific name for male female identical twins?
A: Not Medical Advice:No scientific name for that because Identical twins are always the same sex.They're split from one fertilized egg, have same DNA and genes. r... Read More »
Source: www.kgbanswers.com