Question: The work of the scientist credited with the discovery of what he called "chiasmatypie" was continued by what American scientist? 
Context: The Global Open Access List (GOAL), until January 2012 the American Scientist Open Access Forum, is the longest-standing online discussion forum on Open Access (free online access to peer-reviewed research).  It was created by the American Scientist, which is published by Sigma Xi, in September 1998, before the term "Open Access" (OA) was coined, and it was originally called the "September98-Forum."  Its first focus was an article published in American Scientist in which Thomas J Walker of the University of Florida proposed that journals should furnish free online access out of the fees authors pay them to purchase reprints.  Stevan Harnad, who had in 1994 made the Subversive Proposal that all researchers should self archive their peer-reviewed research, was invited to moderate the forum, which was not expected to last more than a few months.  It continued to grow in size and influence across the years and is still the site where most of the main developments in OA are first mooted, including self-archiving, institutional repositories, citation impact, research performance metrics, publishing reform, copyright reform, open access journals, and open access mandates. Paul Kaznelson (1898–1959) was a Polish-born Czech scientist credited with describing the first case of pure red cell aplasia.  He is also known for his contribution to the discovery of the therapeutic role of splenectomy in idiopathic thrombocytopenic purpura. Mary Sherman Morgan (November 4, 1921 – August 4, 2004) was a U.S. rocket fuel scientist credited with the invention of the liquid fuel Hydyne in 1957, which powered the Jupiter-C rocket that boosted the United States' first satellite, Explorer 1. Sir Maurice Vincent Wilkes FRS, FREng, DFBCS (26 June 1913 – 29 November 2010) was a British computer scientist credited with several important developments in computing.  At the time of his death, Wilkes was an Emeritus Professor of the University of Cambridge.  He received a number of distinctions: he was a knight bachelor, Distinguished Fellow of the British Computer Society, a Fellow of the Royal Academy of Engineering and a Fellow of the Royal Society. Richard S. Morse (August 19, 1911 – July 1, 1988) was an American inventor and scientist credited with invention of orange juice concentrate, the founder of the Minute Maid, a member of the National Academy of Engineering, Assistant Secretary of the Army, and senior lecturer at Sloan School of Management of Massachusetts Institute of Technology. Frans Alfons Janssens (Sint-Niklaas 23 July 1865 - Wichelen, 8 October 1924).  Ordained as a priest in 1886, he obtained a PhD in Natural Science with the highest honors and a scholarship to attend the most prestigious foreign laboratories.  He worked with Professor Kjeldahl at the Hansen Institute Carlsberg Brewery in Copenhagen and was a teacher at the St. Lawrence Brewery School in Ghent.  In 1896, he became a professor at the Faculty of Sciences for the Catholic University of Leuven, as a chair in microscopy and later in cytology, succeeding Jean-Baptiste Carnoy in the chair.  He is the discoverer of the crossing-over of genes during meiosis, which he called 'chiasmatypie'.  His work was continued by the Nobel Prize winner Thomas Hunt Morgan to develop the theory of genetic linkage. Professor Stanley Gill (26 March 1926 – 1975) was a British computer scientist credited, along with Maurice Wilkes and David Wheeler, with the invention of the first computer subroutine. Juan R. Correa-Pérez, Ph.D. (born May 3, 1968 in San Juan, Puerto Rico) is a scientist credited with becoming the first (doctoral level) clinical Andrologist and Embryologist established in Puerto Rico (1998).  He has a particular interest and expertise in male-factor infertility with an impressive resume of research.  Dr. Correa-Pérez is highly skilled in assisted hatching, retrieval of sperm from epididymal/testicular tissue, Intracytoplasmic Sperm Injection (ICSI), oocyte/embryo biopsy for Preimplantation Genetic Diagnosis (PGD) all aspects of andrology and embryology, sperm and embryo cryopreservation (freezing) and the treatment of severe male factor infertility.  He has a long and successful history of achieving impressive IVF success rates.  He is also certified as a High-Complexity Clinical Laboratory Director (HCLD) by the American Board of Bioanalysis ABB) in the disciplines of Andrology and Embryology. 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. Bernard Vonnegut (August 29, 1914 – April 25, 1997) was an American atmospheric scientist credited with discovering that silver iodide could be used effectively in cloud seeding to produce snow and rain.  He was the older brother of American novelist Kurt Vonnegut.
Answer: Thomas Hunt Morgan