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human-chromosome-number

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Journal Articles
Historical Studies in the Natural Sciences (2015) 45 (1): 115–146.
Published: 01 February 2015
...Soraya de Chadarevian In 1956, Joe Hin Tjio and Albert Levan published a paper in which they suggested that the number of human chromosomes was 46 and not 48. The story of the recount has been the subject of numerous studies and debates. In this essay I propose to revisit the 1956 paper and the...
Journal Articles
Historical Studies in the Natural Sciences (2015) 45 (1): 85–114.
Published: 01 February 2015
... observation were therefore opened up, from agricultural and botanical research to the clinical laboratory. I suggest it was research on tumors and cancer cells that led to a method for obtaining clear slides, thereby providing evidence of the new number of forty-six human chromosomes, as presented by Tjio and...
Journal Articles
Historical Studies in the Natural Sciences (2020) 50 (1-2): 183–198.
Published: 02 April 2020
... world can be characterized by three elements that emerge from the ethos of our time: the new role that information plays in human life, biopolitics as a gov- ernance strategy, and the rise of autonomy as a foundational ethical principle. Contemporary society is driven by information, knowledge, and...
Journal Articles
Historical Studies in the Natural Sciences (2019) 49 (4): 351–383.
Published: 01 September 2019
... with Y-DNA researchers. The non-recombining portions of Y-chromosomal DNA were another research object for human evolution as supplemental to mtDNA analysis due to the portions paternal inheritance and non-recombination properties.36 The YCC (Y Chromosome Consortium) which began with Wilson s former...
Journal Articles
Historical Studies in the Natural Sciences (2019) 49 (1): 41–69.
Published: 01 February 2019
... Natural Sciences, Vol. 49, Number 1, pps. 41 69. ISSN 1939-1811, electronic ISSN 1939-182X. © 2019 by the Regents of the University of California. All rights reserved. Please direct all requests for permission to photocopy or reproduce article content through the University of California Press s Reprints...
Journal Articles
Historical Studies in the Natural Sciences (2018) 48 (5): 648–658.
Published: 01 November 2018
... Natural Sciences, Vol. 48, Number 5, pps. 648 658. ISSN 1939-1811, electronic ISSN 1939-182X. © 2018 by the Regents of the University of California. All rights reserved. Please direct all requests for permission to photocopy or reproduce article content through the University of California Press s...
Journal Articles
Historical Studies in the Natural Sciences (2018) 48 (1): 1–23.
Published: 01 February 2018
... a failed research program, this paper argues that a number of factors significantly slowed, but did not halt, developments in somatic hybridization research from the 1960s; the technique should therefore be considered a dormant biotechnology. Reconstructing the history of somatic hybridization...
Journal Articles
Historical Studies in the Natural Sciences (2017) 47 (3): 349–388.
Published: 01 June 2017
... producing monstrosities or freaks50 Think- ing of radiation as damaging body cells rather than sex cells obscured the kind of danger geneticists (and particularly population geneticists) warned about, namely, an increase in the number of mutations (or genetic load carried in the human gene pool, and its...
Journal Articles
Historical Studies in the Natural Sciences (2017) 47 (1): 76–106.
Published: 01 February 2017
... fascinating than anything anyone else was working on. Observing the chromosomes, Vieira Natividade followed every move, learning their likes and dislikes. He studied in considerable detail the size relationships of the cork oak chromosomes,33 showing the somatic chromo- some number (2n ¼ 24). With a sharp eye...
Journal Articles
Historical Studies in the Natural Sciences (2016) 46 (2): 119–153.
Published: 01 April 2016
... in the Natural Sciences, Vol. 46, Number 2, pps. 119 153. ISSN 1939-1811, electronic ISSN 1939-182X. © 2016 by the Regents of the University of California. All rights reserved. Please direct all requests for permission to photocopy or reproduce article content through the University of California...
Journal Articles
Historical Studies in the Natural Sciences (2015) 45 (1): 49–84.
Published: 01 February 2015
... chromosomes and called it the “sex chromatin.” This hypothesis inspired the development of the chromatin into a technology that could indicate “chromosomal” or “genetic” sex, which supposedly established male and female sex difference as a binary and fundamental characteristic of humans and other animals at...
Journal Articles
Historical Studies in the Natural Sciences (2015) 45 (1): 174–197.
Published: 01 February 2015
..., within which chromosomes were of very similar size and shape. Visual variants potentially offered ameans ofmore readily identifying individual chromosomes. Working in the laboratory of geneticist James Renwick, Ferguson-Smith iden- tified a number of chromosomal polymorphisms.15 Human chromosomes are...
Journal Articles
Historical Studies in the Natural Sciences (2015) 45 (1): 1–13.
Published: 01 February 2015
... biological experiments, living systems, and medicine. From very different but complementary perspectives, the papers of Mar´ a Jesu´s Santesmases and Soraya de Chadarevian deal with one of the oddest historical questions regarding the study of chromosomes: the late discovery of the true number of human...
Journal Articles
Historical Studies in the Natural Sciences (2015) 45 (2): 273–302.
Published: 01 April 2015
... Institution of Oceanography, Historical Archives, University of California, San Diego, La Jolla, CA; SIBR, Scripps Institute of Biological Research; SMA, Scripps Marine Association. | 273 Historical Studies in the Natural Sciences, Vol. 45, Number 2, pps. 273 302. ISSN 1939-1811, electronic ISSN 1939-182X...
Journal Articles
Historical Studies in the Natural Sciences (2015) 45 (1): 147–173.
Published: 01 February 2015
... human genetics developed in Mexico was clinical practice. Armendares and a number of other Mexican physicians tried to understand the hereditary and congenital character of certain pathologies, and it was during the 1960s that the management of hereditary diseases enabled knowledge of human hereditary...
Journal Articles
Historical Studies in the Natural Sciences (2015) 45 (1): 14–48.
Published: 01 February 2015
... and Measurements; NRC, National Research Council; OpenNet, DOE OpenNet database of declassified documents, identified here by accession number, available at httpswww.osti.gov/opennet/; RG, Record Group. 14 | Historical Studies in the Natural Sciences, Vol. 45, Number 1, pps. 14 48. ISSN 1939-1811...
Journal Articles
Historical Studies in the Natural Sciences (2014) 44 (5): 503–508.
Published: 01 November 2014
...Alexandra Minna Stern © 2014 by the Regents of the University of California 2014 Roundtable on the History of Eugenics 2015 marks the thirtieth anniversary of the publication of Daniel J. Kevles s book, In the Name of Eugenics: Genetics and the Uses of Human Heredity (Knopf, 1985). Given the...
Journal Articles
Historical Studies in the Natural Sciences (2014) 44 (5): 521–530.
Published: 01 November 2014
... emancipators, as one might call them, forged special methods to study heredity in human beings, organisms that (unlike, say, fruit flies) reproduce infrequently and in limited numbers and cannot be subjected to controlled breeding experiments. They changed the character and reliability of the science of human...
Journal Articles
Historical Studies in the Natural Sciences (2014) 44 (5): 509–513.
Published: 01 November 2014
..., and Kevles s account is faithful to this truth. He devotes most of a chapter to the techniques that enabled re- searchers at last during the late 1950s to fix the number of human chromosomes at 46 and not, as had long been supposed, 48. And chromosomal abnormalities such as Down syndrome figured...
Journal Articles
Historical Studies in the Natural Sciences (2014) 44 (4): 364–412.
Published: 01 September 2014
... Sciences; UCSCRC, Uni- versity of Chicago Special Collections Research Center, University of Chicago, Chicago, IL. 364 | Historical Studies in the Natural Sciences, Vol. 44, Number 4, pps. 364 412. ISSN 1939-1811, electronic ISSN 1939-182X. © 2014 by the Regents of the University of California. All rights...