Most people have 46 chromosomes in each cell, with males typically having one X and one Y chromosome (XY). XYY where a male has an additional Y chromosome in each of their cells, resulting in an XYY configuration. This extra Y chromosome leads to 47 chromosomes in affected individuals, though sometimes this mutation is only present in a subset of cells.
A recent incident in China brought attention to XYY syndrome, also known as Jacobs Syndrome, in an unusual and troubling way. A woman chose to terminate her pregnancy after being medically advised that her unborn boy carries XYY syndrome and might exhibit an attention deficit, hyperactivity and impulsive behaviour in the future, but not criminal tendencies or aggressive behaviour as miscommunicated by many. We at have collated important information you must follow to get a clear idea of XYY Syndrome or Jacobs Syndrome.
Jacobs Syndrome, or XYY Syndrome, is a rare chromosomal disorder affecting male children. This condition occurs when a male has an extra Y chromosome, resulting in a 47,XYY karyotype instead of the typical 46,XY. According to the , this condition affects approximately 1 in every 1,000 boys.
This genetic anomaly occurs due to a random event during the formation of sperm cells. It is not inherited and can happen in any male. Often, it goes undiagnosed due to its mild and variable symptoms.
Generally, individuals with XYY syndrome lead normal lives. Some might be taller than average and encounter learning difficult.