Klinefelter syndrome isn’t passed down through families like some genetic diseases. Instead, it happens randomly from an error in cell division when a parent’s reproductive cells are being formed . If one of these cells is part of a successful pregnancy, a baby boy will have the XXY condition.
How do you care for someone with Klinefelter syndrome?
- Testosterone replacement therapy. ...
- Breast tissue removal. ...
- Speech and physical therapy. ...
- Educational evaluation and support. ...
- Fertility treatment. ...
- Psychological counseling.
Which parent passes on Klinefelter syndrome?
The mother is responsible for passing on one X chromosome to her child and the father may provide another X chromosome for a daughter or a Y chromosome for a son. A boy born with Klinefelter syndrome has an extra X chromosome that is believed to be caused by a random error.
Can females have Klinefelter?
Klinefelter syndrome affects males only; females cannot have it . Klinefelter syndrome results from a genetic abnormality in which males have an extra copy of the X chromosome. Instead of the usual XY chromosomes, males with Klinefelter syndrome have an XXY pattern.
Can Klinefelter syndrome be inherited?
Klinefelter syndrome occurs as a result of a random error that causes a male to be born with an extra sex chromosome. It isn’t an inherited condition .
Can Klinefelter syndrome be passed onto offspring?
Klinefelter syndrome is not inherited ; the addition of an extra X chromosome occurs during the formation of reproductive cells (eggs or sperm) in one of an affected person’s parents.
Many boys with Klinefelter syndrome show symptoms related to their development of social and language skills. They may have trouble paying attention . A lot of boys learn to talk late or have trouble using words to express their emotions. They also can have trouble with things like learning to spell, read, and write.
Why are Klinefelter males tall?
From early school age, boys with Klinefelter’s syndrome tend to be taller (increased leg length) because testosterone normally stops boys growing after puberty . This increase in height is maintained throughout life. Patients with Klinefelter’s syndrome may have reduced coordination compared with other boys.
How does Klinefelter syndrome affect intellectual development?
These may include academic difficulties, delayed speech and language acquisition , diminished short-term memory, decreased data-retrieval skills, reading difficulties, dyslexia, and attention deficit disorder.
Are XXY boys or girls?
Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY). The X chromosome is not a “female” chromosome and is present in everyone. The presence of a Y chromosome denotes male sex.
Why does Klinefelter syndrome only affect males?
It’s a genetic condition (meaning a person is born with it). Klinefelter syndrome only affects males. It happens because of a difference deep inside the body’s cells, in microscopic strings of DNA (what make up genes) called chromosomes.
How do human males with XXY abnormality suffer?
As babies and children, XXY males may have weaker muscles and reduced strength . As they grow older, they tend to become taller than average. They may have less muscle control and coordination than other boys of their age.
Is there a YY gender?
Males with XYY syndrome have 47 chromosomes because of the extra Y chromosome. This condition is also sometimes called Jacob’s syndrome, XYY karyotype, or YY syndrome. According to the National Institutes of Health, XYY syndrome occurs in 1 out of every 1,000 boys.
Which of the following is most likely a characteristic of persons with Klinefelter syndrome?
Males who have Klinefelter syndrome may have the following symptoms: small, firm testes , a small penis, sparse pubic, armpit and facial hair, enlarged breasts (called gynecomastia), tall stature, and abnormal body proportions (long legs, short trunk).
What is the life expectancy of someone with Klinefelter syndrome?
According to research, Klinefelter syndrome can shorten your life expectancy up to two years . However, you can still live a long, full life with this condition. The earlier you get treatment, the better your outlook will be.
What is the quality of life with Klinefelter syndrome?
A Danish survey report, by Skakkebæk et al, indicated that persons with Klinefelter syndrome tend to have reduced mental and physical quality of life , caused directly by Klinefelter syndrome and indirectly by factors that, compared with controls, include lower levels of income, physical activity, and sexual function.
Is Klinefelter’s intersex?
Therefore, according to the NZKA, not all XXY individuals will develop Klinefelter Syndrome, for the Syndrome is simply a form of male hypogonadism, caused by a lack of testosterone: thus XXY is not an intersex condition .
Does Klinefelter syndrome affect teeth?
The X chromosome has been linked to enamel thickness as well as the rate of dental development (2, 16, 32, 39, 44-46). Consequently, males affected by KS have larger teeth than males with a normal chromosomal complement (19, 32, 36, 44, 47-49).
Can you be short with Klinefelter syndrome?
Although one of the most characteristic features of Klinefelter syndrome is tall stature, some uncommon variants are associated with short stature (49 XXXXY, isochromosome Xq) [3–5].
How does Klinefelter syndrome affect the brain?
Klinefelter syndrome has increased brain responses to auditory stimuli and motor output , but not to visual stimuli or Stroop adaptation.
What genetic disorders affect males?
XYY syndrome is a rare chromosomal disorder present at birth that affects only males. It is estimated to occur in approximately one in 1,000 live births.
How many sexes are there?
Based on the sole criterion of production of reproductive cells, there are two and only two sexes : the female sex, capable of producing large gametes (ovules), and the male sex, which produces small gametes (spermatozoa).
Does Klinefelter syndrome affect a certain race?
About 1 in every 500 to 800 males is born with this disorder; approximately 3000 affected boys are born each year in the United Sates. About 3% of the infertile male population have Klinefelter syndrome. The condition appears to affect all racial and ethnic groups equally .
Can humans have 47 chromosomes?
47, XYY syndrome is caused by the presence of an extra copy of the Y chromosome in each of a male’s cells. As a result of the extra Y chromosome, each cell has a total of 47 chromosomes instead of the usual 46.
Can an XY female get pregnant?
Males and most XY females cannot become pregnant because they don ‘t have a uterus. The uterus is where the fetus develops, and pregnancy isn’t possible without it. In most cases, having a Y chromosome means having no uterus, so pregnancy isn’t possible.
What is the superman syndrome?
Superman syndrome, also known as 47, XYY, is a condition classified as a chromosomal aneuploidy (which is an abnormality in chromosome structure and/or number) in which males have an additional Y chromosome .
