The work of the scientist credited with the discovery of what he called "chiasmatypie" was continued by what American scientist? 
Frans Alfons Janssens:  He is the discoverer of the crossing-over of genes during meiosis, which he called 'chiasmatypie'. Frans Alfons Janssens:  His work was continued by the Nobel Prize winner Thomas Hunt Morgan to develop the theory of genetic linkage. Thomas Hunt Morgan: Thomas Hunt Morgan (September 25, 1866 – December 4, 1945) was an American evolutionary biologist, geneticist, embryologist, and science author who won the Nobel Prize in Physiology or Medicine in 1933 for discoveries elucidating the role that the chromosome plays in heredity.
i don't know