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Identical twins - Simple English Wikipedia, the free encyclopedia

simple.wikipedia.org/wiki/Identical_twins

They are always of the same sex, and are monozygotic or MZ twins (mono = one; ... For IVF deliveries, there are nearly 21 pairs of twins for every 1,000. ... to be the same sex, while non-identical ...

Identical twins CAN be opposite genders! - BabyandBump

babyandbump.momtastic.com/twins-triplets-multiples/114004-identical-twins-can-opposite-genders.html

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 ...

Monozygotic twins of opposite sex. - NCBI

www.ncbi.nlm.nih.gov/pubmed/11173871

Although discordant karyotypes are known in identical twins, cases involving ... as DSS/NR0B1, duplication of which can disrupt the male-determining pathway,  ...

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

www.verywell.com/boy-girl-identical-twins-2447124

Can boy girl twins be identical? ... Can Identical Twins Be Different Genders? ... After it splits, there are either two males or two females. ... The bottom line is that twins that are different sexes—a boy and a girl—are not identical (or monozygotic ) ...

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

www.twinsuk.co.uk/twinstips/4/140/twin-pregnancy--multiple-births/types-of-twins--identical-fraternal--unusual-twinning/

Like singleton siblings. they share 50% of their DNA. ... Two-thirds of all twin births result in same sex fraternal twins and one-third are different sex fraternal twins. ... of identical twins and are identical twins with opposite features. that is one will ...

Facts About Identical Twins - Multiple Treasures

www.multipletreasures.com/facts-about-identical-twins.php

Any parent of identical twins will tell you - there is no such thing as identical. ... There have been 3 - 5 documented cases of opposite sex identical twins. This can ...

Re: can identical twins be of opposite genders? - MadSci Network

www.madsci.org/posts/archives/1999-07/931746434.Gb.r.html

Jul 11, 1999 ... Of these 23 sets, one set determines a person's sex - we call this ... There have been rare reports of male and female "identical twins" (see ...

How do fraternal twins differ from identical twins? - UCSB Science Line

scienceline.ucsb.edu/getkey.php?key=4016

These babies can come out because of different reasons such as hyper-ovulation (it is ... Identical twins are always the same sex and blood type. ... They can be of opposite sex. ... For identical twins, there is only one egg and one sperm.

A life-long buddy in your own image | Life and style | The Guardian

www.theguardian.com/lifeandstyle/2012/sep/15/opposite-sex-twins

Sep 15, 2012 ... And how does that affect their adult romantic relationships? ... Opposite-sex twins – boy-girl twins – fascinate me. ... an opposite-sex twin herself and believes that these pairings are less visible than identical or same-sex twins.

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

jmg.bmj.com/content/13/1/64.abstract

The male twin has a karyotype of 46, XY and normal sexual development. Only two other reports of pairs of monozygotic twins of opposite sex have been ...

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can identical twins be opposite sex? | Yahoo Answers

answers.yahoo.com

Sep 5, 2009 ... However, there is a very rare anomolie that occurs where you can get twins that have come from the same egg and sperm but are opposite ...

What is it like to have an opposite gender twin? - Quora

www.quora.com

So, there is more likely chance of getting more girl friends. There is ... Having a twin of the opposite gender is not a problem until she is in same school same class with you. ..... Can monozygotic (genetically identical) twins be different sexes?

Can monozygotic (genetically identical) twins be different sexes ...

www.quora.com

I know that fraternal twins can be different sexes because they come from two different ... And there are many cases of identical twins where one grows up to be  ...