Is It Possible That Non-identical Twins Come From Different Fathers?
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Twins who are not alike (twins are not identical) may both be your children. Females have 2 ovaries, right and left. Every month, the ovaries will release an egg. If the egg is fertilized by sperm, pregnancy will occur. Only 1 egg cell (from the right or left ovary) or 2 (the right ovary and the left ovary can both release an egg at the same time). Men will release millions of sperm cells every time they ejaculate. If at any point a woman produces 2 eggs, then both eggs are fertilized at the same time by each one of the millions of sperm cells that enter, there will be multiple pregnancies. The two babies who will be born will not look like identical twins. This is because the genetic material of each child is different (derived from different egg cells and different sperm cells). They will only look like ordinary siblings, where there are those that look like father, some that look like mother, or their equivalent.
There is a very, very slim chance of non-identical twins coming from different fathers. This can only happen if a woman has sex with 2 men at the same time (day) in her fertile period. If a woman has sex with another man after her egg is fertilized, the man's sperm will not be able to fertilize the egg because the fertilized egg has a defense against re-entering the sperm cell.
A father with blood type O and a wife with blood type B will have a child with blood type O or B. If both children have blood type O, have both B, or one is O and the other is B, the two children may still be children. Father. As I mentioned earlier, children who come from 2 different eggs and 2 different sperm cells will have different genetic material (including those that regulate blood type). They will only look like ordinary siblings. Even though you don't have any doubts, it is important to check your child's blood type. If an emergency situation occurs and requires a blood transfusion, the doctor can immediately give the appropriate blood transfusion without waiting for the test results. DNA testing is a test that can be performed for absolutely certain results.
So much information from me. I hope this helps.