Since the birth of Eva, whether she is like a mother or a father has become an eternal issue.
There are also some folk sayings that what’s daughters are like fathers and boys follow mothers.
But are these statements really reliable? Does what decide the child’s double eyelid, long eyelashes and height?
Today, we invited Zhuang Shili, Master of Neurology, and let him have a good break with us on this topic.
Double eyelid
Many mothers will have such doubts:
My father and I both have double eyelids. Why does the baby have single eyelids?
Do you remember the pea hybridization experiment in high school biology class? Let’s recall that double eyelid also follows the laws of genetics and is autosomal dominant inheritance.
Simply put, both parents are double eyelids, and there is a 1/16 probability of giving birth to a baby with single eyelids. However, if one parent is double eyelids and the other is single eyelids, the probability that the baby is single eyelids will certainly be higher.
What if both parents have single eyelids? Then the probability that the baby has a pair of Korean-style single eyelids is about 100%.
Why do many newborns have single eyelid?
In fact, when most babies are first born, their eyelids are slightly swollen, showing a single eyelid.
When the baby is about two months old, the swelling gradually subsides and the double eyelids slowly show up.
Therefore, treasure parents don’t worry, the baby’s double eyelids need to wait patiently before they can show up.
However, the [folk secret technique] of using a spoon to whole a child’s double eyelid does not have what help except to increase the probability of eye infection.
Long eyelashes
Many parents want their children to have beautiful long eyelashes, but unfortunately, the length of eyelashes is also determined by genes. And like double eyelid, it is autosomal dominant inheritance.
Therefore, the length of baby’s eyelashes has long been predestined.
However, many parents listen to some folk remedies and adopt various methods to cut off the baby’s eyelashes, but they do not know that there is a great risk in doing so.
Eyelashes are small in number compared with other hairs, but their effects are not small. In addition to the well-known aesthetic effects, there are also very important physiological effects.
- Eyelashes can reduce the wind speed and the evaporation rate of tears on the corneal surface. Eyelashes can block sand and dust in the air.
Think about whether camels in the desert all have thick eyelashes.
Therefore, trimming baby eyelashes is very dangerous. In addition to easily causing bacterial infection in the eyes, and in the trimming process, the baby often cannot cooperate, eyelid blink is easy to hurt the cornea or conjunctiva, and may even cause serious injury.
For the safety of the baby’s eyes, if it is not necessary for medicine (such as trichiasis), we strongly do not recommend trimming the baby’s eyelashes.
Dimples
Many people think dimples are cute and charming. In fact, dimples are caused by some shortened cheek muscles.
Face has very rich expression muscles, these expression muscles let us express all kinds of emotions such as joys and sorrows. Some people’s expression muscles will shorten or adhere. When smiling, the muscles will tighten the skin, resulting in skin depressions above the corners of the mouth obliquely, which is what we often call dimples.
Dimples, like double eyelids, are autosomal dominant inheritance. However, due to the rich expression muscles and unpredictable variations in human beings, dimples may not appear even if there are dominant genes.
However, in today’s highly developed plastic surgery technology, doctors can imitate the natural formation mechanism of dimples through fine adjustment of these facial muscles, so that beautiful dimples can appear on people’s faces.
Big and tall
Heredity is the most important factor affecting height, such as Yao Ming’s family. Yao Ming is 226cm tall, his wife Ye Li is 190cm tall, and his 7-year-old daughter is nearly 140cm tall.
But heredity is not the only factor affecting height.
According to estimates, 60% ~ 80% of the height difference is determined by genes, while the remaining 20% ~ 40% is attributed to environmental factors, such as acquired nutrition and exercise.
The average height of many junior and senior high school students after 00 in China is much higher than that of their parents when they were the same age. The main reason is that nutrition has kept up with them.
Does the child’s height follow his father or his mother?
Previous studies have shown that 697 genes are related to human height variation. Therefore, height cannot be accurately inferred like double eyelid.
Finally, in addition to the above points [color value composition], the baby’s skin color, face shape, etc. are also affected by as many as dozens or hundreds of genes, and it is difficult to make accurate speculation.
What [soy sauce baby will turn black], [rabbit head baby will cleft lip], are all rumors, in addition to making you feel salty and spicy crying, will not have any impact on the baby’s appearance.
Heredity allows children to retain some characteristics of their parents, while variation makes babies unique individuals in the world.
What Mom and Dad have to do is four words: wait quietly.
Following the law of natural growth, healthy and happy babies are the most beautiful babies!