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Twins are two offspring produced by the same pregnancy. Twins can be either monozygotic ("identical"), meaning that they develop ..... There can be monozygotic boy/girl twins if the sex ge...

Boy/Girl Twins: Identical Twins of Different Genders - Verywell


Can boy girl twins be identical? This article examines the issue of identical twins of different genders, and the exception of transgender twins.

Can a boy and a girl be identical twins? | Reference.com


Rarely, a boy and girl may be identical twins. This condition, called Turner Syndrome, afflicts very few pairs of twins. The gender difference occurs when an egg ...

Identical Boy Girl Twins? - Twin Pregnancy and Beyond


I have identical boy twins and was told the other day that identical boy twins are pretty rare but that the rarest type of identical twins are identical boy girl twins.

Boy/Girl Identical Twins - Facebook


Boy/Girl Identical Twins. January 23, 2013 at 5:50pm. Can boy/girl twins be identical? Boy/Girl identical twins.... Click here to read our latest article!

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


Identical Twins occur when a single egg is fertilized by a single sperm to form ... form monozygotic boy/girl twins by dropping the Y chromosome for one twin and  ...

A birth of twins—one boy and one girl—from a single embryo ... - NCBI


Oct 14, 2009 ... Healthy twins with a boy and a girl were delivered at 37 weeks 0 days of gestation by a cesarean ... Identical twins and in vitro fertilization.

Gender Probabilities for Twins - Math Forum - Ask Dr. Math


What are the probabilities of having two girls, two boys, and one of each? ... therefore the probability of any combination of boy or girl is 1/2, i.e. each ... As a twin myself (and my identical twin brother is also a Math Doctor), ...

Strange but true: Semi-identical twins | BabyCenter


Find out how twins from the same egg can be fraternal and identical. ... separate sperm – one with a Y (boy) chromosome and one with an X (girl) chromosome.

How are girl and boy twins born? - Quora


In a female human, every month one egg is released from either one of the ovaries. ... up having one girl and one boy. In all the above cases the twins born are non - identical as there's two different eggs . Written Jun 5, 2015 ...

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Identical twins CAN be opposite genders! - BabyandBump


Identical twins are almost always the same sex, but surprisingly there are a tiny number of boy-girl monozygotic twins. They result from an egg ...

FAQ - Australian Twin Registry


Can identical twins ever be boy/girl twins? Can fraternal twins look so similar that they are mistaken for identical? What are chromosomes? Can identical twins ...

Monozygotic twins discordant for sex. -- Schmidt et al. 13 (1): 64 ...


A pair of monozygotic, adolescent twins is discordant for sex. The phenotypic female twin has chromosome constitution of 46, XY/45, X. She displays many signs ...