Read on to learn more about twins. Thomson Reuters. A year German study  of 8, vaginally delivered twins that is, 4, pregnancies in Hesse yielded a mean delivery time interval of This results in one normal male XY and one female with Turner syndrome 45,X.
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Stanford School of Medicine. With in vitro fertilisation IVFthis is primarily due to the insertion of multiple embryos into the uterus. However, things in their environment, such as how much room they each had in the womb, can cause slight differences in their appearance.
This condition is called Turner Syndrome. The chance of a twin pregnancy is also higher if a couple uses assisted reproductive technology to help them to become pregnant. The other embryo would still develop into a male XY. After they are born, they will certainly have different experiences.
It's unclear how many other semi-identical, or "sesquizygotic," twins are out there, but it's likely "extraordinarily rare," said lead author Dr. Armed with a few facts about twins, you'll be able just to grin and bear it or enlighten the curious about the biology of twins.
What is Quantum Technology? Monoamniotic twins occur when the split takes place after the ninth day after fertilization. Wikimedia Commons Wikiquote. Multiple pregnancies are much less likely to carry to full term than single births, with twin pregnancies lasting on average 37 weeks, three weeks less than full term.