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Do conjoined twins have the same sex?
Yes. Conjoined twins are always identical (monozygotic) twins, and identical twins are always the same sex.There is a theoretical case where identical twins could be opposite genders, when the babies are female but in one of the females, a branch of one X chromosome breaks away; however, I don't believe this has ever been observed.
Why can't identical twins be of the opposite sex?
Identical twins are formed from a single fertilized egg that splits into two embryos. Because they share the same genetic material, identical twins are always the same sex. Opposite-sex twins are typically fraternal twins, formed from two separate eggs fertilized by two different sperm.
Was Shakespeare's twins identical?
No. All identical twins are the same sex. Judith and Hamnet were opposite sexes, and so were fraternal twins.
Can identical twins be of different sexes?
They can be. While identical twins always have to be the same gender, fraternal twins usually are not. However this is not always the case. Identical twins occur because they inhabit the same egg. Fraternal twins because two eggs were fertilized at the same time. So fraternal twins could be the same gender, but usually they are of the opposite gender.
Is it possible of same sex children in non identical twins?
Yes.
Do identical twins have to be the same sex?
Yes. Identical twins come from one fertilized egg that has been split in two. Therefore, whatever sex the single egg would've been, the twins will be.
Are monozygotic twins opposite sex?
No, monozygotic twins would be the same sex. Monozygotic twins come from one single fertilized egg, or zygote, which then splits to create two separate zygotes which will be genetically identical, or "identical twins", which will always be of the same gender.
Are all conjoined twins same sex?
No, not all conjoined twins are the same sex. While most conjoined twins are identical and share the same sex due to their identical genetic makeup, there are rare cases where conjoined twins can be fraternal, resulting in one twin being male and the other female. The occurrence of conjoined twins is quite rare, and the sex combination can vary depending on the type of twinning that occurs.
Why are identical twins always the same gender?
fraternal twins have two different chromosomes
What are facts about identical twins?
Identical twins are formed when a single fertilized egg splits into two embryos during early development. They share the same genetic makeup, so they are always the same sex and look very similar. Despite their genetic similarities, identical twins can have different personalities, preferences, and traits due to environmental influences and individual experiences.
What is the different between identical twins and franternal twins?
The DNA of identical twins and of clones is, apart from random, environmentally produced mutations, 100% identical. The only difference is that clones are produced on purpose through advanced bioengineering techniques while identical twins happen as an accident of nature. Identical twins are, in a sense, natural clones.
What are the odds of same sex in twin pregnancy?
The odds of having same-sex twins in a twin pregnancy are approximately 25%. This is because identical twins (monozygotic) are genetically the same and will always be the same sex, while fraternal twins (dizygotic) can be either the same sex or different sexes. Since fraternal twins are produced from two separate eggs fertilized by two separate sperm, they have a 50% chance of being the same sex. Overall, the combination of these factors results in the approximately 25% odds of same-sex twins.
