Contents:
- Medical Video: 10 Mind Blowing Facts About Twins
- How do genetic factors determine the chances of becoming pregnant with twins?
- Only maternal genes can inherit twins
- Not all descendants are twins
Medical Video: 10 Mind Blowing Facts About Twins
Some people might want to have twins. However, the phenomenon of twins often makes you wonder and confused. Where do twins come from? Do you have to have new breeds of twins can you have twins? Or do you have to jump over a new generation of twins? See the explanation about the pregnancy of twins here.
How do genetic factors determine the chances of becoming pregnant with twins?
Genetic factors have an important role in determining how much the opportunity for couples to have twins. If one of your parents has a twin brother, then chances are that you will have twins too later on. Because, your body can carry twin genes inherited from parents.
Even so, this inherited twin gene is more likely to produce twins not identical, aka fraternal twins than identical twins. Fraternal twins are the result of two fertilized eggs simultaneously. This might happen when the mother's body experiences hyperovulation, which is releasing more than one different egg at a time. Usually, the egg released by the ovum every month is only one fruit.
Simply put, fraternal twins are a pair of children produced from different sperm-egg pairs. So the DNA of the two fraternal twins will be different. This is also the reason why many fraternal twins do not have similar faces and other physical characteristics, and most are male and female partners.
Only maternal genes can inherit twins
Only genes from the mother's side will leave you the opportunity to have twins later on. Because the formation of these genes occurs during the period of hyperovulation of women while the father only acts as a gene carrying twins. Confused?
Look: For example, you are a woman born to a father who has a twin mother. That is, your grandmother is a pair of twins. Your own father is not born twin. But if you are already in pairs and planning to become pregnant, you have a good chance of having fraternal twins. This is because you inherited the twin genes from the grandmother brought by your father. For the next generation, your daughter also has a high chance of having twins because she inherited the same gene from you.
It is not known what specific type of gene causes a woman to get pregnant with fraternal twins. But the FSH hormone, aka follicle-stimulating hormone, is suspected as one of the factors. Mothers who have high FSH levels are more likely to have fraternal twins.
Not all descendants are twins
Although genetic factors have a share that is strong enough to determine the chances of multiple pregnancies, but not all cases of twins come from hereditary history.
Identical twins are very rarely caused by genetic factors. Identical twins are formed from one egg and one sperm merges into a zygote, like a single pregnancy in general. But after the cleavage process, the zygote will divide into two embryos. Next these two emrios will grow and develop into two prospective babies. This embryo division occurs spontaneously and randomly.
Therefore, although the possibilities are small, all couples can get pregnant with twins even though they do not have twin breeds in the family.
