Both husband and wife have double eyelids, why did they give birth to a son with single eyelids

Biological Questions. Double eyelids are dominant compared to single eyelids (e.g. double.

Represented by a, single.

Represented by a) when both husband and wife's genes are AA, their offspring genes may be AA, AA, AA, AA, it can be seen that the probability of single eyelid in the offspring is greater. Whether it's a boy or a girl is just a matter of chance.

There are recessive inheritance and dominant inheritance, such as yours is AA, your wife's is AA, A stands for double, A stands for single, and the chance of you having a single eyelid child is 1 in 4.

Double eyelids are dominant genes located on autosomes, which can be recorded as A, and single eyelids are recessive, which can be recorded as A, which should be the genes of both of you and your husband and wife.

My daughter is like this, but I found that when she woke up, she had double eyelids, and I believe that when she is older, she will change, and my mother said that I have double eyelids that have changed later.

Recessive genes, a 1 in 4 probability, are normal, and I dare not say it in the future, do you see that kind of sign in his eyes now? I can usually see it in the person that can become the double eyelid later, and I look forward to it

This is going to talk about dominant genes and recessive genes, for example, the dominant gene is d and the recessive gene is d, so let's take a look at the combination, dd, dd, dd. As long as there is one dominant gene, it will show traits, and the recessive gene can only be manifested if both are recessive genes, so the gene fragment of the husband and wife is DD, so there is a DD combination, can you see it?

Are the couple's double eyelids natural? If it changes the day after tomorrow, the child will also change when he grows up.

Some children don't change until they are more than a year old, but my friend's child becomes a double at more than 7 months

My daughter is 1 year old and 5 months old with my husband with a single eyelid

The single eyelid is also very cute

Some people aren't born with double eyelids, and I have a classmate.

She didn't have double eyelids until she was six years old.

Don't worry, it should be.

It doesn't seem to be a genetic cause.

Because the son's biological father is a single eyelid.

One of the husband and wife has a single eyelid.

One person has two eyelids.

Will the child have single eyelids or double eyelids?

Double eyelidsThe main manifestation of microbial strains in the process of genetic decision-making is that if the parents are single eyelids for each other, children generally have single eyelidsIf one parent has one eyelid and one double eyelid or both have double eyelids, the chances of future generations having double eyelids are higher. The inheritance of double eyelid genes is a genetic gene, which is actually one or more sex chromosomes in two waiting chromosomes.

If you inherit the double eyelid gene, you will have a double eyelid appearance. Only when the two chromosomes are not inherited without the addition of double eyelid genes, can it appear as a single eyelid.

As older people focus on sagging and cover the overlapping wrinkles, the double eyelids slowly dissipate. There is a certain genetic law between single eyelids and double eyelids, AA and AA represent double eyelids, AA stands for single eyelids, if parents are double eyelids for each other, children are particularly likely to inherit genetic double eyelids. If mom and dad have one eyelid and the other has a double eyelid, the genetics can be full single eyelid or full double eyelid, or even one eye and the other eye double eyelid.

If mom and dad both have a single eyelid, the only chance of inheriting the gene is that it is a single eyelid.

Single and double eyelids are recombined by dominant genes.

controlled, in which double eyelids are genetically controlled, while single eyelids are controlled by genetic recombination. If only one of the parents has double eyelids, the child's double eyelid probability is about 50%, and both parents have double eyelids, then the genetic rate of the child's double eyelids is 100%, and the parents are both single eyelids, so it is not easy to have double eyelid genetic inheritance in the body. However, as children grow up, they sometimes have genetic mutations.

Dad has a single eyelid and mom has a double eyelid, and a child may have a double eyelid, all of which may be a single eyelid.

According to the basic law of molecular genetics, double eyelids are inherited genes, and single eyelids are genetic recombination. The double eyelid inheritance gene can be specifically divided into heterozygous and homozygous. When dad has a single eyelid and mom has a heterozygous double eyelid, the child has half the chance of having a double eyelid and half of the probability of having a single eyelid; When dad has single eyelids and mom is homozygous for double eyelids, the little one must have double eyelids.

Overall, a child has a 3 out of 4 chance of having double eyelids and a 1 in 4 chance of having a single eyelid. The child has single eyelids or double eyelids, which is influenced by genetic inheritance, and parents do not need to be overly anxious. Father's single eyelid and mother's double eyelid, after the baby is born, the probability of double eyelids will be better.

Parents with double eyelids may also give birth to a child with a single eyelid, but it is not possible to look at the parents, but also on the genes of both families. If both men and women have a single eyelid gene in their families, it is possible to give birth to a single eyelid baby at that time, but the maximum probability is only one in four. Even if one party does not have the single eyelid gene, then there will be no single eyelid baby.

It depends on whether the double eyelid is a recessive gene or a dominant gene, if it is a recessive gene, the child has a single eyelid and vice versa.

If one of the husband and wife has one eyelid and the other has two eyes, then the proportion of large eyelids and double eyelids will account for 50% of the child.