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Which parent determines identical twins?

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Neither. Identical (monozygotic) twins result from the division of an early embryo and that appears to be totally random. Monozygotic twins (and their relatives) are no more likely to have monozygotic twins than anyone else. read more

Neither. Identical twins are formed when the embryo divides, not when the man gives extra-special sperm or the woman releases multiple eggs. It would be more true that the offspring rather than either parent "determines" this trait. read more

NEITHER parent determines if an egg will be a twin. In the case of identical twins, a single egg is fertilized to produce one zygote. That zygote then divides into two seperate embryos. This splitting of the zygote has nothing to do with your genes. It happens randomly. In the case of fraternal twins, two eggs are implanted in the uterus. read more

Also, identical twins are not remotely hereditary, they are a "fluke of nature", as my doctor said. It is your one single egg that just decided to split. So in other words, if the women in your family were producing more than one egg at a time, then you have more of a chance to do so yourself. read more

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Midwife gives birth to identical triplets | Triplets ...
Source: pinterest.com

Further Research

Do Twins Run in Families?
www.verywellfamily.com

Your Side or Your Husband's?
www.twin-pregnancy-and-beyond.com