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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 ...
Richard Ramirez, the serial killer who was sentenced to death following his heinous crimes in California, died while on death row in 2013. He was 53.
Manuel Delgado Villegas: known as El Arropiero [499] ("The Arrope Trader"), wandering criminal with XYY syndrome that confessed to 48 murders in Spain, France and Italy, including his girlfriend; considered guilty of seven and interned in a mental institution until his death in 1998.
This is a non-diffusing subcategory of Category:American criminals. ... Executed American women (79 P) M. American female murderers (1 C, 279 P) O.
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 ...
Hugh Hefner, the man who created a magazine empire, died Wednesday at the age of 91. His legacy includes some of the most famous Playboy playmates ever to grace the cover and go one to become ...