Name a disorder, give the karyotype and write the symptoms where a human male suffers as a result of an additional X-chromosome.

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Solution

Klinefelter Syndrome

Cause: Additional copy of X chromosome, i.e., 47 chromosomes (XXY)

Affected individual has an overall masculine development with gynaecomastia; individual is sterile

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Assertion [A]: Klinefelter syndrome occurs only in males.

Reason [R]: Klinefelter syndrome is characterised by an additional Y chromosome in the karyotype.

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Name a disorder, give the karyotype and write the symptoms where a human male suffers as a result of an additional X-chromosome.

Klinefelter Syndrome Cause: Additional copy of X chromosome, i.e., 47 chromosomes (XXY) Affected individual has an overall masculine development with gynaecomastia; individual is sterile

Klinefelter Syndrome

Cause: Additional copy of X chromosome, i.e., 47 chromosomes (XXY)

Affected individual has an overall masculine development with gynaecomastia; individual is sterile