Yang Nanfeng's androgyny is male or female;
Yang Nanfeng, a rare chromosome with XXY? Klinefelter's syndrome? Patient, commonly known as? Androgyny? . In other words, he was male at birth and in childhood, and will gradually show female characteristics after puberty.
That is to say, he is hermaphrodite, either male or female!
Yang Nanfeng's nude photos show that he is a man.
But the photo below shows that he is a woman again.
Photos of Yang Nanfeng's parents
How is the chromosome XXY?
On 1942, Dr. Harry and his colleagues published a report at Massachusetts General Hospital in Boston. About 9 people have enlarged breasts, sparse hair on the face and body, and small testicles, which can't produce sperm.
By the end of 1950s, researchers found this group of symptoms, which was later called Creutzfeldt-Jacob syndrome. Men had an extra sex chromosome XXY instead of the usual male arrangement XY. For a more complete explanation of the function of this extra chromosome, please refer to the attachment. Chromosomes and klinefelter's syndrome? . )
In the early 1970s, researchers around the world tried to find that men had extra chromosomes by screening a large number of newborn babies. The largest of these studies, sponsored by the National Association for Child Health and Human Development, involved chromosome examination of more than 40,000 infants.
According to these studies, XXY chromosome arrangement seems to be the most common known genetic abnormality, and the frequency of male birth ranges from 1500 to 1000. Although the cause of the syndrome, extra sex chromosomes, is common, the syndrome itself has a set of symptoms and characteristics, which may make extra chromosomes rare. Many men have never doubted that they have an extra chromosome in their lives.
I never mentioned newborns because they don't have syndrome. Dr Robinson, a pediatrician at the University of Colorado School of Medicine in Denver, and Director NICHD sponsored the research on XXY men. ? It is speculated that some of them will develop the syndrome described by Dr. Kirsch when they grow up, but many of them will not. ?
To this end,? Klinefelter's syndrome? This word has been favored by medical researchers. I like to describe men and boys with extra chromosomes XXY best. ?
Apart from occasional breast enhancement, lack of facial and body hair and sleek figure, XXY men are more likely to be overweight than other men, and often longer than their fathers and brothers.
In most cases, these symptoms can be cured. If necessary, surgery can reduce the breast. Regular injection of testosterone can improve the strength and facial hair growth at the beginning of puberty, and bring a stronger body shape.
However, more serious symptoms are not always obvious. Although not mentally retarded, most XXY men have a certain degree of language barrier. As children, they often learn to speak much later than other children, and may have difficulty in learning to read and write. Although most people finally learn to speak and talk normally, they often encounter some difficulties in their life-long language learning. If left untreated, this language barrier will lead to academic failure and subsequent loss of self-esteem.
Fortunately, however, this language barrier can usually be compensated. If you start from early childhood, your chances of success are greatest.
Chromosome and klinefelter syndrome
Chromosomes and noodles, like the genetic material constantly found in every human cell, determine the color of our eyes and hair, our height, whether we are male or female and other characteristics.
Women usually inherit two X chromosomes, one from their parents. Men usually inherit an X chromosome from their mother and a Y chromosome from their father. Most men with Lannfelt's syndrome are described by Dr., however, there is an extra X chromosome, and there are two X chromosomes and one Y chromosome in total.
cause
No one knows what made a couple in XXY risk their children. There is little risk for elderly women to increase the XXY chromosome count. In addition, a recent study by Terry Hassold, a geneticist in case western reserve university, Cleveland, Ohio, shows that in half cases, the extra chromosomes come from the father.
Dr Hassold explained that cells destined to become sperm or eggs undergo a process called meiosis. In this process, 46 chromosomes of the cell were separated, and finally two new cells were produced, each with 23 chromosomes. It is completed before meiosis, however, chromosome pairs exchange the genetic material of their corresponding chromosomes. In women, the X chromosome is paired with the male, and the X and Y chromosomes are paired. After communication, chromosomes separate and continue meiosis.
In some cases, two X or X chromosomes and Y chromosomes can't be paired, so it is impossible to exchange genetic material. Sometimes, this will cause an egg with two X's or a sperm with one X and one Y chromosome to move to the same unit independently. When a sperm with an X chromosome and a Y chromosome has only one X chromosome or a normal sperm fertilized egg with a Y chromosome has two X chromosomes, XXY male imagines.
diagnose
Because they usually look no different from others, many XXY men may never know their extra chromosomes. However, if they are diagnosed, the chances are greatest at the following times in their lives: before or shortly after birth, early childhood, adolescence, and adulthood (test results for treating infertility).
In recent years, many XXY men were diagnosed by amniocentesis or chorionic villus sampling (CVS) before birth. In amniocentesis, fluid samples around the fetus are taken. Then, check the chromosomal abnormality of fetal cells in the liquid. CVS is similar to amniocentesis, but the process is completed in the first three months, and the required fetal cells are examined from the placenta. Whether the program is often used, unless there is a genetic defect in the family history, the pregnant woman is over 35 years old, or other medical indications, the program exists.
If I want to say something to my parents who have prenatal diagnosis, it will be' You are lucky, you know, say? Melissa, the mother of a XXY boy. ? Because parents don't know that their son has such a problem, they can never help them lead a normal life. But you can. ?
The most likely diagnosis in the future is the opportunity for children to start school. Doctors may suspect that a boy is XXY. If he delays learning to speak, he will have difficulty in reading and writing. XXY boys may also be tall and thin, a little passive and shy. However, there is no guarantee. Some boys who meet this description will have XXY chromosome count, but many don't.
When several XXY men were in adolescence, their breasts grew too big, forcing them to seek medical advice. Like some men with normal chromosomes, many XXY men have slight breast enlargement during adolescence. Only about 10% of the third XXY male will develop breasts that are so big that they are embarrassed.
The chance of final diagnosis is as a test result of infertility in adulthood. At this time, the examining doctor may notice the characteristics of XXY male with short testicles. In addition to infertility tests, doctors can also arrange tests to detect known increases in gonadotropin levels, which are common in XXY men.
Chromosome karyotype is used for diagnosis. In this process, a small amount of blood samples are taken. Then white blood cells are separated from the sample, mixed with tissue culture solution, incubated, and examined for chromosomal abnormalities, such as extra X chromosomes.