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Nine of the patients, ranging from 5 ft 7 in (1.70 m) to 6 ft 2 in (1.88 m) height, were found to have an extra Y chromosome, the XYY syndrome. [20] [21] [22] Jacobs hypothesized that men with XYY syndrome are more prone to aggressive and violent behavior than males with the normal XY karyotype, but the idea was later shown to be incorrect.
XYY syndrome, also known as Jacobs syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. [1] There are usually few symptoms. [2] These may include being taller than average and an increased risk of learning disabilities. [1] [2] The person is generally otherwise normal, including typical rates of fertility. [1]
Despite her work being on XXY syndrome, the XYY syndrome is instead sometimes called Jacobs syndrome: [6] After it had been incidentally discovered by Avery Sandberg in 1961, [7] the syndrome was also found in a chromosome survey of 315 men at a hospital for developmentally disabled, made by Jacobs and hence considered the first little research ...
As riveting as it is to follow the twisted narratives of serial murderers on screen, many killers have never been caught in real life. Here are 10 infamous serial killers who eluded justice.
Diagnosed with XYY syndrome and interned in a mental institution until his death in 1998. [283] Ershad Sikder Bangladesh: 1991–1999 7 43+ Career criminal and corrupt politician responsible for numerous torture murders in the 1990s; convicted on seven counts and executed 2004. [284] Diego Alexánder Ruiz Restrepo Chile: 2018–2020 7 27
His DNA was found at multiple crime scenes, conclusively linking him to the murders. In 2004, he was convicted of two murders and sentenced to death. Lee died of heart disease in 2016 while on ...
He was found guilty by the jury in September 2023 and sentenced to 30 years in prison. The women accused him of raping them between 2001 and 2003. The third count was labeled a mistrial and has ...
Manuel Delgado Villegas was born in Seville, Spain on 25 January 1943, the son of José Delgado Martín.His mother died while giving birth to him, at the age of 24. [3] The itinerant nature of his father's job as a salesman of arrope (a fruit concentrate produced in southern Spain and used to make sweets), hence the nickname El Arropiero, resulted in Delgado and his sister Joaquina being sent ...