* This is the Professional Version. *
47,XYY Syndrome
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Patient Education
Patient Education
- Chromosome and Gene Anomalies
- Overview of Chromosomal Anomalies
- Down Syndrome (Trisomy 21)
- Trisomy 18
- Trisomy 13
- Chromosomal Deletion Syndromes
- Microdeletion Gene Syndromes
- Overview of Sex Chromosome Anomalies
- Turner Syndrome
- Klinefelter Syndrome (47,XXY)
- 47,XYY Syndrome
- Other X Chromosome Anomalies
- Fragile X Syndrome
47,XYY syndrome is two Y chromosomes and one X, resulting in a phenotypic male.
The 47,XYY syndrome occurs in about 1/1000 live male births.
Affected boys tend to be taller than average and have a 10- to 15-point IQ reduction compared with family members. There are few physical problems. Minor behavior disorders, hyperactivity, attention-deficit disorder, and learning disorders are more common.
- Chromosome and Gene Anomalies
- Overview of Chromosomal Anomalies
- Down Syndrome (Trisomy 21)
- Trisomy 18
- Trisomy 13
- Chromosomal Deletion Syndromes
- Microdeletion Gene Syndromes
- Overview of Sex Chromosome Anomalies
- Turner Syndrome
- Klinefelter Syndrome (47,XXY)
- 47,XYY Syndrome
- Other X Chromosome Anomalies
- Fragile X Syndrome
* This is the Professional Version. *
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