Klinefelter syndrome is a chromosomal condition that only affects males and is characterized by a male having an additional X chromosome (XXY) in cells. This chromosome abnormality occurs when there is an error in cell division, resulting in an extra copy of the X chromosome.
The extra chromosomes is retained because of nondisjunction event during meiosis.The XXY chromosomes arrangement is one of the most common genetic varaition from XY karyotype.Because of extrachromosome individual with the condition are usually referrd to as XXY males or 47,XXY males.
Klinefelter syndrome and Turner syndrome, like Down syndrome, are conditions that occur when a person is born with an extra X chromosome (Klinefelter's) or one X chromosome not enough (Turner's) or extra copies of chromosome #21 (Down). These 3 syndromes are usually not inherited, although a form of Down syndrome may be inherited from one parent.
The causes of chromosomal disorders like the above are birth defect and possible inheritance, as far as we know.
non disjunction of sex chromosomes
Non disjunction of sex chromosomes
Chromosomal disorders can be observed in a human karyotype. It can show whether there are extra chromosomes, or missing chromosomes, or malformed chromosomes, or whether chromosomes have extra pieces, or missing pieces.
Non-disjunction can result in a number of different conditions, including Down Syndrome, Klinefelter Syndrome, Turner's Syndrome, Super Males, Triple X syndrome or Edward's Syndrome.
The most common type of chromosomal disorder is the Down syndrome caused by an added copy of chromosomes 21. More common chromosomal disorders are Klinefelter's syndrome and Turnerâ??s syndrome.
Trisomy means having three copies of a chromosomes. Turner's syndrome is NOT an example of trisomy. Someone with Turner's syndrome has only one X chromosome. Down's syndrome IS an example of trisomy. Someone with Down's syndrome has 3 copies of chromosome 21. Klinefelter's syndrome is a tricky one. On one hand, it would be considered trisomy because they have 3 sex chromosomes. However, they are not all the SAME sex chromosomes. Someone with Klinefelter's has 2 X chromosomes and one Y chromosome.
You are simply born with it, no causes have been discovered yet.
non disjunction of sex chromosomes
non disjunction of sex chromosomes
Because they are random chromosomal disorders and not inherited.
No, they are nondisjunctions of the sex chromosomes (since in Turner syndrome you only have 1 sex chromosome and in Klinefelter syndrome you have 3).
Chromosomal disorders can be observed in a human karyotype. It can show whether there are extra chromosomes, or missing chromosomes, or malformed chromosomes, or whether chromosomes have extra pieces, or missing pieces.
Non-disjunction can result in a number of different conditions, including Down Syndrome, Klinefelter Syndrome, Turner's Syndrome, Super Males, Triple X syndrome or Edward's Syndrome.
If you mean how many; there are 46, or 23 homologous pairs. There are 22 autosomal pairs and the sex chromosomes (X and X/Y). This can vary in some disorders, such as Down Syndrome, Turner Syndrome, Klinefelter's Syndrome, and Triple X Syndrome.
The most common type of chromosomal disorder is the Down syndrome caused by an added copy of chromosomes 21. More common chromosomal disorders are Klinefelter's syndrome and Turnerâ??s syndrome.
Trisomy 21 (Down's syndrome), Turner's syndrome (XO), and Klinefelter's syndrome (XXY) are a few examples of genetic disorders that can result when chromosomes don't separate correctly during meiosis.
Yes animals do sometimes have Turner's syndrome or Klinefelter's syndrome with similar characteristics as those observed in humans.
Trisomy means having three copies of a chromosomes. Turner's syndrome is NOT an example of trisomy. Someone with Turner's syndrome has only one X chromosome. Down's syndrome IS an example of trisomy. Someone with Down's syndrome has 3 copies of chromosome 21. Klinefelter's syndrome is a tricky one. On one hand, it would be considered trisomy because they have 3 sex chromosomes. However, they are not all the SAME sex chromosomes. Someone with Klinefelter's has 2 X chromosomes and one Y chromosome.
Anorexia nervosa and disorders of the hypothalamus or pituitary gland can result in abnormally low FSH levels. Abnormal levels can also indicate: infertility hypopituitarism klinefelter syndrome (in men) turner syndrome ovarian failure