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XYY Syndrome XYY Syndrome or the criminal syndrome is a controversial and often confused chromosomal abnormality In the following paper I will try to address several questions that people may have concerning or relating to XYY syndrome What is XYY syndrome Where and how often does XYY syndrome occur What is the history behind XYY syndrome What are some of the affects of XYY syndrome What is the controversy that the study of XYY syndrome brings along with it XYY syndrome is a chromosomal abnormality present at birth that affects only males It is estimated to occur in between one out of every nine hundred to one out of every fifteen hundred live births and usually is not usually hereditary although it is in a small percentage Primary symptoms of XYY syndrome include unordinarily tall height that becomes noticeable at an early age lower than average intelligence delayed speech learning problems bad acne at puberty and an explosive temper XYY syndrome boys usually appear very normal with exception to their unusually tall stature and acne and XYY syndrome often goes undiagnosed by doctorsTo understand XYY syndrome we must understand how and where it occurs XYY syndrome is a common abnormality that occurs when a male receives an extra Y sex chromosome During normal reproduction a person receives an X chromosome from their mother and an X or a Y chromosome from their father This chromosome from the father determines the sex of the individual if the father gives the child an X chromosome then the child will be female if he gives a Y chromosome then the child will be male When a chromosomal abnormality occurs it is known as non-disjunction which is a failure of the homologous chromosomes to separate during the synopsis stage of meiosis When the homologous chromosomes fail to separate the individual winds up with too few or too many chromosomes A normal human being has 22 pairs of
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