Most mothers expect the baby in their wombs during pregnancy to be a beautiful and lovely daughter or handsome son. But a person who looks too good is also a kind of trouble.
A photo of a little Iranian girl, Mattie, has become popular on the Internet, she is known as "the most beautiful girl in the world", and her facial features meet almost everyone's aesthetics, just like an angelic appearance.
Netizens shouted: It is almost like a live-action version of Barbie dolls, and it is all natural. In order to protect his daughter, Marty's father simply quit his job to become his daughter's personal bodyguard.
Because of Marty's beauty, there will always be people giving gifts when walking on the street, and of course, it is inevitable that you will meet people with bad intentions.
In order not to let his daughter be harassed, the father had to work as a full-time bodyguard, which is also a sweet burden. Marty looks so beautiful, of course, depends on the strong genes of her parents, and her parents' appearance is definitely not leveraged.
Sure enough, Marty's mother is also a standard beauty, with dark eyes and thick eyebrows, but compared with Marty, her mother's appearance is much inferior.
And look at Dad's appearance, it is also thick eyebrows, big eyes, pointed chin, and a straight nose bridge, and Marty just inherited these three advantages, this genetic is really too tough is completely the old population said "with the advantages".
It is often said that "the daughter is like the father, the son is like the mother", but this sentence is not completely accurate, and the appearance of the child is determined by the "dominant gene" and the "recessive gene".
In genetics, genes appear in pairs, and the child's physical characteristics and diseases are formed by the combination of the genetic chain of the father and the gene chain of the mother.
In the process of pairing, two possibilities arise: heterozygotes and homozygotes. Homozygotes say that the genes carried by both parents are the same, either double invisibility or double dominant;
The heterozygote means that the genes carried by the parents are not the same, and whether the characteristics of the father or the mother are expressed in the child depends on which side of the gene is dominant and which side is invisible.
Dominant genes prevail and are easily passed on to children. Of course, this is not to say that recessive genes will not be passed on to the next generation at all.
If from the facial features, double eyelids belong to the dominant gene, as long as one of the parents is a double eyelid, the child is very likely to be a double eyelid, unless the child is inherited to a double recessive gene, it can only be a single eyelid.
In addition to appearance, there are some chromosomal recessive genetic diseases. Many people will find that the parents do not have any disease manifestations, but the child has a certain disease.
This is because the parents have a certain genetic disease gene, which is genetically called heterozygote, and they have no disease themselves, but the next generation lies on the gun.
Therefore, genetic testing before pregnancy is more important, especially if there is a history of chromosomal recessive genetic disease in immediate family.
Chromosomal recessive genetic diseases are roughly divided into several types: phenylketonuria, which is simply the lack of an enzyme in the body that causes phenylalanine in the body to not be converted to tyrosine, and the disease can be controlled by eating special rice noodles.
There are also melania, albinism, galactosuria, etc., most of which are metabolic diseases.
Some of these diseases are controllable, some are more terrible, and some can be detected during pregnancy and then terminated to minimize the harm.
No matter what the baby looks like, in the eyes of the mother will always be a little angel, so in order for the little angels to be healthy and beautiful, you must check on time, keep a good mood and always be ready to welcome the arrival of the baby!