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Do twins have to have the same mother?
Twins occur when two babies are born to one mother after a single pregnancy. If they’re identical (monozygotic), they formed when one zygote, created with just one egg and one sperm, splits into two new eggs, resulting in two embryos rather than one. Each embryo then develops into a separate fetus.
What are twins with different mothers called?
Polar twins share the same chromosomes from their birthing parent, but they get different chromosomes from their non-birthing parent. This is because they’re created from a single egg but two separate sperm.
Is it possible for a woman to be pregnant with twins from different fathers?
In rare cases, fraternal twins can be born from two different fathers in a phenomenon called heteropaternal superfecundation. Although uncommon, rare cases have been documented where a woman is pregnant by two different men at the same time.
Can twins be from different families?
It is possible for twins to have different fathers in a phenomenon called heteropaternal superfecundation, which occurs when two of a woman’s eggs are fertilized by sperm from two different men. Identical twins occur if that fertilized egg divides into two separate eggs, early in the pregnancy.
Can I have twins if my husband is a twin?
If the twins are present on your husband’s/partner’s side, it won’t influence your chances of having twins. Remember, the gene for hyperovulation is only a factor for the mother. If your mother (or your grandmother or aunt) was or had fraternal twins, you might have the gene.
What are Dutch twins?
The phrase “Irish twins” describes two children born to the same mother within 12 months. Therefore, children with a spacing of less than 12 months became known as Irish twins (also known as “Catholic twins” or “Dutch twins”).
Which parent carries the gene for twins?
This is why fraternal twins run in families. However, only women ovulate. So, the mother’s genes control this and the fathers don’t. This is why having a background of twins in the family matters only if it is on the mother’s side.
What are Didi twins?
In a di/di pregnancy (more scientifically referred to as a dichorionic diamniotic pregnancy) the twins each have their own chorionic and amniotic sacs. Essentially, each of the babies is growing like they would as a singleton, but just a little more cramped, because they’re sharing the same womb.