Why do some people have hidden double eyelids?

The reason for the hidden double eyelid is that the folds of the double eyelids themselves are not very strong, which sometimes causes the patient to have double eyelids, sometimes the double eyelids are not obvious, and some double eyelid folds will appear when the eyes are wide open, which are all possible phenomena of hidden double eyelids. In response to this condition, some people develop a definite double eyelid crease as they age, and some people will stay that way.

It is recommended that patients who prefer their own double eyelid shape can have double eyelid surgery. The patient can choose the method of thread embedding, positioning, and incision, and the specific choice is determined according to the patient's own eye foundation. If the age is relatively young, and the relative tightness is moderate, the eye cleft is relatively long, and the eyelids are not bloated, the thread embedding method and positioning method can achieve good morphological requirements.

If these conditions are not met, it is recommended that the patient choose the method of incision.

It is recommended that you go to a cosmetic institution for a minor surgery, you can choose the double eyelid cutting method, in general, the risk of double eyelid incision surgery is not high, but there may be some symptoms after the operation, as long as you take good care of it, you can return to nature. In addition, two weeks before double eyelid surgery, it is necessary to abstain from smoking, alcohol, pregnancy and menstruation, and avoid oral administrations such as aspirin or aspirin-containing drugs, as these drugs can aggravate bleeding during double eyelid surgery and may increase the risk of double eyelid surgery.

Are you talking about double eyelid patches?

Single eyelid is recessive and double eyelid is dominant. Single and double eyelids are the distinguishing features that distinguish a person from being right-brained or left-brained.

That is to say, people with double eyelids, whose personality and behavior are mainly right-brained, are typical emotional people, such people are generally emotional, outgoing, and sociable. People with single eyelids, whose personality and behavioral characteristics are dominated by the left brain, are typical rational people, such people are generally steady, introverted, and not good at communicating.

Double eyelids are controlled by dominant genes, i.e., genotype AA or AA determines double eyelids; Single eyelid is controlled by recessive genes, i.e., genotype AA determines single eyelid. The production of single eyelids and double eyelids is related to one of the levator palpebrae muscles in the upper eyelid. The formation of double eyelids is due to the fact that the levator palpebrae muscle has fibers extending to the subcutaneous area, and the muscle contraction causes the retraction of the attachment site, constituting the **fold, that is, the double eyelid, commonly known as double eyelids; The single eyelid lacks this levator palpebrae fiber, which attaches to the **, and therefore does not have a fold.

The double eyelid bai is determined by the dominant gene, capitalized.

The letter du zho indicates the dominant gene, and the gene in the cell dao is.

within AA; The single eyelid is determined by the recessive gene, which is indicated by a lowercase letter, and the gene in the cell is AA.

2.The gene that controls the black fur of guinea pigs is the dominant gene (a), and the gene that controls the white fur of guinea pigs is the recessive gene (a).

3.Generalized albinism is inherited in an autosomal recessive manner. Focal albinism is inherited in an autosomal dominant manner.

4.Dominant gene control in congenital deafness.

5.Dominant gene control for panchromatopsia.

1. Autosomal dominant genetic diseases.

1. Polydactyly (toe) and syndactyly (toe).

2. Globin dyspoietic anemia.

3. Multiple familial colon polyps.

4. Polycystic kidney.

5. Congenital achondroplasia.

6. Congenital osteogenesis hypoplasia.

7. Retinoblastoma.

2. Autosomal recessive diseases.

1. Albinism.

2. Phenylketonuria.

3. Galactosemia.

4. Mucopolysaccharidosis.

5. Congenital adrenal hyperplasia.

3. X-linked dominant genetic diseases.

1. Anti-vitamin D rickets.

2. Familial hereditary nephritis.

4. X-linked recessive genetic diseases.

1. Hemophilia A.

2. Hemophilia B.

3. Color blindness. 4. Progressive muscular dystrophy.

You don't need to memorize this, you have to look at the question, and push it back according to the conditions of the question! If the title is just a random gene or a random letter instead, how do you memorize it?

Dominant genes can be inherited at AA and AA.

Recessive genes can only be inherited when they are AA.

Probably not, if it's a recessive gene, AA

If you cross with AA, there will only be the possibility of AA, then the parents are children who will not give birth to single eyelids with double eyelids, but in fact this is not the case, so the double eyelids are controlled by dominant genes.

No, both eyelids and large eyes are overt.

It is easy to pass on to children the double eyelids. Because the double eyelid is dominantly inherited and the single eyelid is recessive, the genetic factors of the double eyelid are more likely to manifest themselves on the surface. If both parents have a single eyelid, the child should generally have a single eyelid as well.

If both parents have double eyelids, in general, the child should have double eyelids as well, but occasionally there are single eyelids. The reason for this change is the same reason that couples with blood types A and B have children with blood type O. In other words, although both parents have double eyelids, they both have a single eyelid gene, and when the single eyelid gene from both parents is paired, the child will become a single eyelid.

1. If both parents have double eyelids, the gene can be realized as:

AA+AA, that is, both parents carry the dominant gene of double eyelids, then the child's gene is AA, that is, double eyelids;

AA+AA, that is, if one parent has a recessive gene for a single eyelid, then the child is AA or AA, and still presents with double eyelids;

AA+AA, that is, both parents carry the recessive gene of single eyelid, then the child's gene may be AA, AA, AA, that is, the baby may have double eyelids or single eyelids.

2. If one parent has a double eyelid and the other has a single eyelid, then the gene can be expressed as follows

AA+AA, then the child's genetic expression is 100% AA, that is, double eyelids;

AA+AA, that is, one side of the double eyelid carries the recessive gene of single eyelid, and the child's basic suspicion may be manifested as AA and AA, then the baby may have double eyelids or single eyelids.

3. When both parents have a single eyelid, the gene can be:

AA+AA, that is, if neither parent carries the dominant gene for double eyelids, then the child may only have a single eyelid.

Categories: Medical Diseases.

Problem description: Is one single eyelid and the other double eyelid "recessive" or "overt"?

I have a single eyelid in one eye and a double eyelid in the other eyelid, and my left eye became double when I was 9 years old. My daughter's parents have double eyelids. Both of my subjects have single eyelids, and his parents also have double eyelids.

I heard that one single eyelid and one double eyelid are because there are two eyes, one is recessive and the other is dominant. I wonder if this is "recessive" or "dominant" when passed on to the next generation.

In a situation like mine, if the woman is single on the left and on the right (both parents), and the man is single (both parents), will the child born have double eyelids? Or what are the possibilities?

Thank you!! Analysis:

The control gene of double eyelids is an autosomal dominant gene, and the parents of LZ are both double eyelids, and LZ has a single eyelid with a bad match, which means that the control genes of LZ eyelids are both recessive.

a- represents the dominant gene, and the gene expression is double eyelids.

a- represents the recessive gene, and the gene expression is single eyelid.

The AA and AA combinations are double eyelids, and only the AA combination is a single eyelid.

And what the cuddle said, you are an acquired double eyelid, I don't think it is genetically controlled, the cuddle master's gene is AA, and your parents are genetically AA.

As long as there is an A in the gene, it will be a double eyelid.

And the friend who hugs the owner is also a single eyelid, so the gene is AA.

Therefore, both parties can only produce a recessive A, which is also an AA after combination, which is a single eyelid, and there will be no double Yuchen eyelids. As long as there is a dominant presence, it is a double eyelid. I also know that Zen was only a genetics I learned in high school, and I can't guarantee that it is very correct.

If you don't know how to speak, look at this**, there is a demo.

foodmate/topic/6/21875

If both parents have double eyelids, the gene composition may be pure dominant AA or one dominant and one recessive AA

If one of the parents is genetically AA, the child must have double eyelids; If the genome of both parents controlling the trait is AA, the genetic ** is as follows: From the genetic**, it can be seen that if both parents have double eyelids, their children may have double eyelids or single eyelids

So a person's double eyelid is a dominant trait, and a single eyelid is a recessive trait, and if both parents have double eyelids, their children may have double eyelids or single eyelids

Therefore, c

A type of double eyelid, inner double is the conventional name.

Double eyelid refers to the upper eyelid ** having a shallow groove above the eyelid margin, and when the eyes are opened, the **below this groove** moves upward, and the above groove** is relaxed and folds down at the double palpebral sulcus.

The double eyelids are dominant, but the performance of the traits is different.

Double eyelids are controlled by dominant genes, while single eyelids are controlled by recessive genes.

Dominant genes have a covering effect on recessiveness.

A child's eyelids depend on the genetic makeup of both parents, if the father is a pair of dominant genes, the child has 100% double eyelids, if the father has a recessive gene, the child's eyelids have a 50% probability of single and double eyelids.