When is it easy to have twins in the same room? Some world-famous scientific research institutions have studied it. The research results of the University of Mü nster in Germany show that women who are pregnant in April and May are more likely to have boys, while women who are pregnant in 1 1 and 12 are more likely to have girls.
Dutch experts also found that women have the strongest fertility in 12 and 1 2 months, during which the probability of giving birth to twins and triplets after pregnancy is the highest.
If you want a child with high IQ, you'd better choose to get pregnant in May and June. Research data show that people born in March have higher IQ, and many of those scientists who won the Nobel Prize were born in March.
Generally, fraternal twins can be detected in about 40 days, because fraternal twins have two gestational sacs, which is very obvious.
It will be late to detect identical twins, because the two babies are in the same gestational sac, so we can't tell whether they are twins until the baby has a embryo heart.
It usually takes three months to see whether it is a singleton or a twin. At this time, you can clearly see the auras of the two fetal heads, and you can see their corresponding spine, trunk, limbs and so on.
The HCG value of expectant mothers with twins is much higher than that of expectant mothers with singletons.
What are the chances of twins? According to statistics, in China, the probability of pregnant women giving birth to twins is about five thousandths, and the probability of giving birth to twins is much smaller. It can be said that few people have twins. Therefore, if parents can have twins, they must cherish the babies, because this is the most precious gift.
Twins are identical twins and fraternal twins, and twins are fraternal twins. The so-called identical twins mean that a fertilized egg splits into two embryos during fertilization, and they (they) have the same sex and genes, and the probability is extremely low.
Dizygotic twins refer to two oocytes implanted into a woman's uterus during fertilization and fertilized at the same time, forming two embryos with different placenta and genes.
When one of their genes is xy and the other is xx, they are twins. When two embryos have the same gene, they are fraternal twins.
The country with the highest probability of twins in the world is between 10%- 15%, while the probability in China is about 5%, and the probability of twins is much smaller, because in general, the woman only releases one egg every month, but in a few cases, she releases two eggs, and both eggs are fertilized, so she has the opportunity to have twins, so basically she is lucky to have twins.