Twin pregnancy
Twin pregnancy usually has a hereditary component, often the expectation of twins can cause doubts and worries to future parents
What is twin pregnancy?
We talk about twin pregnancy when the number of fetuses is higher than one, when it comes to the expectation of twins we talk about bigeminal pregnancy, the factors that cause this pregnancy can be different, usually it is a hereditary component, age maternal high or the use of drugs that stimulate ovulation in the treatment of infertility.
Twin pregnancy: monozygotic twins
The most common twin pregnancy is the bigeminal pregnancy, or the expectation of twins. We speak of monozygotic twins when they result from a single egg cell and therefore have the same DNA, are identical and have the same sex.
Twin pregnancy: dizygotic twins
When we talk about twin pregnancy in most cases we are talking about dizygotic twins, or the expectation of twins that develop from two different fertilized egg cells, in this case the twins do not share the same chromosomes and the same genes. The two may look alike but they are not identical, they may be of the same or different sex.
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