Albert Levan 2356501 220622253 2008-06-20T19:21:22Z Thijs!bot 1392310 robot Adding: [[de:Albert Levan]] '''Albert Levan''' (1905 – [[1998]]) was a [[Sweden|Swedish]] [[botanist]] and [[geneticist]]. Albert Levan is best known today for co-authoring the report in 1956 that humans had forty-six [[chromosome]]s (instead of forty-eight, as previously believed). This epochal discovery was made by [[Joe Hin Tjio]] in Levan's laboratory. Originally specialising in plant [[cytology]], Levan later turned to the similarities in the chromosone structure of cancer cells and errors introduced to plant cells via chemical or radioactive elements. These studies later led to examination of chromosomes in animal cells. ==References== *Tjio JH, Levan A. The chromosome number of man. Hereditas 1956; vol. 42, pages 1-6. {{DEFAULTSORT:Levan, Albert}} [[Category:1905 births]] [[Category:1998 deaths]] [[Category:Geneticist]] {{Sweden-bio-stub}} {{botanist-stub}} [[de:Albert Levan]] [[sv:Albert Levan]]