in most people as like as two peas, twins are two children who are the same. Only parents can distinguish their nuances. But is that really the case? < / P > < p > Ms. Zhang just gave birth to a pair of twin sons last year, but found two children, one with dark skin, the other with white skin, one with delicate and lovely facial features, and the other with very ordinary features. < / P > < p > the two children don’t look alike at all! She was as like as two peas, but some of her friends had twins, but the children of the family were exactly the same. At first, she thought it was because the children didn’t grow up, but later the longer the two children grew, the less they looked like each other. < / P > < p > as a result, the doctor told her that the two children didn’t hold each other wrong, but they were fraternal twins, so they didn’t look very normal. After listening to the doctor’s detailed answer and explanation, Ms. Zhang immediately apologized. < / P > < p > then the fertilized egg will be slowly divided into two in the process of development, and grow into two embryos with the same genetic information. Because they are different sperm, they share one egg with the same genetic information. So identical twins are as like as two peas, and may even be very similar in intelligence quotient. < / P > < p > fraternal twins, also known as dizygotic twins, as the name suggests, refers to two eggs discharged by a woman, and then combined with different sperm, they have different implantation positions, and then slowly develop into two completely different embryos. < / P > < p > although they are somewhat similar due to the genes of their mother and father, their origin is two different eggs, which form two fertilized eggs and belong to independent individuals. As a result, genetic information can vary greatly, even in gender.
but the as like as two peas are more rare than the identical twins. Most of the twins we see are mostly alike, and they will produce the same misunderstanding as twins. < / P > < p > as we all know, twins are not so common. Generally, women are pregnant one by one, and twins and multiple births rarely occur. < / P > < p > identical twins are not related to heredity, but fraternal twins are maternally inherited. In other words, when a woman’s family, such as her mother or grandmother, has ever had twins, it is very likely that she also carries this genetic gene, so she is more likely to have twins. < / P > < p > a survey was conducted on 149 mothers who gave birth to twins or multiple births. The survey showed that their height was higher than that of ordinary women. < / P > < p > this is because tall women have more insulin growth factor, which can improve ovarian sensitivity, make it develop better and increase the number of ovulation. < / P > < p > although pregnant mothers who are pregnant with twins are lucky, they also have to bear a heavier burden. The weight of two children makes them work harder during pregnancy. And having two at a time is more financial pressure for parents who are going to have one. But in any case, whether they are heterozygous or homozygous, they are all the children of their parents and should be loved and treated differently. Home