In which genetic condition,each cell in the affected person has three sex chromosomes $XXY$?

  • A
    Thalassemia
  • B
    Klinefelter's Syndrome
  • C
    Phenylketonuria
  • D
    Turner's Syndrome

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In which of the following disorders does an affected individual possess $47$ chromosomes?

Down's syndrome is caused by the trisomy of which chromosome pair?

In which of the genetic disorders does an individual have an overall masculine development,gynaecomastia,and is sterile?

Which of these is not a Mendelian disorder?

In Klinefelter's syndrome,what is generally the set of sex chromosomes?

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