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Results 1 - 1 of 1 for "47,xyy" syndrome
  1. Y chromosome 
    ... children. More About This Health Condition Individuals with 47,XYY syndrome have one X chromosome and two Y chromosomes ... those individuals with this condition.Some people with 47,XYY syndrome have an extra Y chromosome in only some ...
    https://medlineplus.gov/genetics/chromosome/y - Genetics