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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A teoria cromossômica da herança = proposta, fundamentação, crítica e aceitação / The chromosome theory of inheritance : proposal, foundation, cristicism and acceptance

Martins, Lilian Al-Chueyr Pereira 17 August 2018 (has links)
Orientador: Roberto de Andrade Martins / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia / Made available in DSpace on 2018-08-17T06:17:49Z (GMT). No. of bitstreams: 1 Martins_LilianAl-ChueyrPereira_D.pdf: 83499457 bytes, checksum: c34d113afbb9e5052efcd2794e29a65c (MD5) Previous issue date: 1997 / Resumo: A presente tese tem por objetivo estudar o contexto histórico do estabelecimento da teoria cromossômica nas três primeiras décadas do século XX. Este trabalho procura elucidar as principais razões que levaram alguns importantes geneticistas da época, particularmente Thomas Hunt Morgan e William Bateson, a demorar a aceitar que os fatores mendelianos (mais tarde chamados genes) fossem entidades fisicas localizadas em certos pontos definidos ao longo dos cromossomos. A tese procura verificar se a teoria cromossômica estava bem fundamentada, de acordo com os padrões científicos da época, nos seguintes estágios: 1902-3 (proposta da hipótese de Sutton-Boveri); 1910 ("conversão" de Morgan); 1915 (publicação do MecharÚsmof A1endehall herediry, de Morgan e colaboradores); e 1921 ("conversão" de Bateson). Além disso, procura responder se as atitudes dos cientistas poderiam ser racionalmente justificáveis em cada uma das etapas consideradas. No caso de não poderem, este estudo procura detectar quais os fatores extra-científicos que poderiam tê-Ios influenciado... Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital. / Abstract: The aim of this thesis is to study the historical context of the establishment of chromosome theory of inheritance in the three ear1ydecades of the XXth century. This work tries to elucidate the main reasons that lead important geneticists of that time, particular1yThomas Hunt Morgan and William Bateson, to delay for a long time the acceptance that Mendelian factors (later called genes) were physical entities located in some definite points a!ong the chromosomes. The thesis tries to check whether the chromosome theory as well established or not, according to the scientific standards of that time, at the fol!owing times: 1902-3 (proposal of the Sutton-Boveri hypothesis); 1910 (Morgan's "conversion"); 1915 (publication by Morgan, Sturtevant, Mul!er & Bridges, of The mechanÍsm of A1endehan heredÍty); and 1921 (Bateson's partia! "conversion"), Besides that, this work attempts to elucidate whether the scientists' attitudes could be rational!ydefensible or not at each of the examined times. In case they were not, the thesis endeavours to detect any extra-scientific factors that nlight have influenced them... Note: The complete abstract is available with the full eletronic digital thesis or dissertations. / Doutorado / Genetica / Doutor em Ciências Biológicas

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