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Klinefelter Syndrome

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Jason Jiang

on 19 November 2014

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Transcript of Klinefelter Syndrome

Affected DNA and protens
People with Klinefelter's Syndrome do not have different DNA and proteins that normal people.
Inheritance of Klinefelter's Syndrome
Klinefelter's Syndrome cannot be inherited. It only occurs randomly in the formation of reproductive cells (being sperm or egg). An abnormal amount of chromosomes, caused by an error in cell division, causes the ending number of chromosomes to contain one or more extra X's
This means there are no carriers because Klinefelter's is the result of a mutation in cell division. Also, there are no lethal forms of this disease.
Common Symptoms of Klinefelter Syndrome
Common Symptoms include: Small testes that do not produce as much testosterone as usual. This can lead to delayed or incomplete puberty, breast enlargement, reduced facial and body hair, and an inability to have biological children.
Typical people have a total of 46 chromosomes and either XY or XX chromosomes for male and females, respectively. Klinefelter Syndrome results from the presence of one extra X chromosome, meaning each cell has 47 chromosomes of XXY.
Appearance in society
Klinefelter syndrome affects 1 in 500 to 1,000 newborn males. Other variants occur in 1 in 50,000 or fewer males. Many conditions are mildly shown, meaning the numbers could possibly vary depending on what can be considered effects of the disorder.
Klinefelter Syndrome
DNA and Protein Mutations
There is no mutation of the DNA, just an extra copy of the X chromosome.
What is Klinefelter Syndrome?
Klinefelter Syndrome occurs when a male is born with multiple X chromosomes. The condition creates differences in areas of physical and cognitive development in males, including the genitalia,speech, and personalities in those with Klinefelter's.
Some signs of Klinefelter syndrome include a height advantage over peers and a higher chance to get breast cancer and/or systemic lupus erythematosus. A sign for children is that they may have learning disabilities and delayed speech and language development.
How it happened
Treatment for Klinefelter Syndrome
There are many treatments for the effects of Klinefelter.
Lack of Testosterone: Androgen therapy which replaces testosterone around the age of 12 or the beginning of puberty.
Lack of language ability, Physical therapy, and Fertility treatment (which has evolved drastically over the pass few years) are slightly less common treatments for Klinefelter.

Chen, Harold. "Klinefelter Syndrome Treatment & Management."
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"Klinefelter Syndrome."
Genetics Home Reference.
U.S. National Library of Medicine. Jan. 2013. Web. 16 Nov. 2014.
"47, XXY (Klinefelter Syndrome)."
Learning Genetics.
University of Utah: Health Sciences. 2014. Web. 16 Nov. 2014.
How Do People Diagnose Klinefelter's?
Doctors generally check the patient's chest and genital area for Klinefelter's. Another way they check is to take blood and urine smples, called Karyotype analys and do an examination of the shape and number of chromosomes.
By: Kevin Chen, Dustin Nguyen, and Jason Jiang
What is the Prognosis of Someone with Klinefelter's?
People affected by Klinefelter's syndrome usually have emotional/behavioral issues during adolescence. However, most people with Klinefelter's live a full life with every other luxury that normal people enjoy.
In conclusion, Klinefelter's Syndrome is a semi-rare, non-genetic disorder that causes males to have female characteristics. Klinefelter's is caused by non-disjuction during meiosis and results in one or more extra x chromosome.
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