{"id":8324,"date":"1995-01-01T00:00:00","date_gmt":"1995-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/1995\/01\/01\/genetica-y-evolucion-del-adn-medianamente-repetitivo-de-drosophila-buzzatii\/"},"modified":"1995-01-01T00:00:00","modified_gmt":"1995-01-01T00:00:00","slug":"genetica-y-evolucion-del-adn-medianamente-repetitivo-de-drosophila-buzzatii","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/genetica-y-evolucion-del-adn-medianamente-repetitivo-de-drosophila-buzzatii\/","title":{"rendered":"Genetica y evolucion del adn medianamente repetitivo de drosophila buzzatii"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Labrador San Jos\u00e9 Mar\u00eda no <\/strong><\/h2>\n<p>Se ha estimado experimentalmente, por el analisis de 112 clones tomados al azar, que el componente medianamente repetitivo de drosophila buzzatii supone un 21,7% +- 5,5 del genoma. Este porcentaje es muy superior al descrito para otras especies de drosophila. Los resultados indican que, a pesar de encontrar todos los tipos de adn ya descritos, las secuencias de adn simple, o microsatelites, son las mas abundantes y responsables de las diferencias encontradas. Se ha caracterizado molecularmente el clon cdb314, que ha resultado ser una copia defectiva de un nuevo elemento movil, presente en todas las especies proximas a d. Buzzatii. La secuenciacion del clon (6017 pb) indica que el elemento se incluye en el grupo gypsy de retrotransposones de drosophila. A este retrotransposon se le ha denominado osvaldo. Se ha comprobado experimentalmente que el elemento osvaldo transpone a elevadas tasas, mediante explosiones (bursts), en individuos recientemente extraidos de una poblacion natural (8,5&#215;10-3), en individuos altamente consanguineos (1,4&#215;10-3 -3,3&#215;10-3) y en hibridos interespecificos entre las especies d.  buzzatii y d. Koepferae (4,2&#215;10-3 -3,9&#215;10-2). Las tasas de transposicion se dan en transposiciones por elemento y generacion. A pesar de existir un orden de magnitud superior en los hibridos, las diferencias entre hibridos y no hibridos han resultado solo marginalmente significativas, debido a la poca potencia de las pruebas no parametricas utilizadas. Finalmente se ha determinado cual es la distribucion de frecuencias de las posiciones del elemento osvaldo en cinco poblaciones naturales de la peninsula iberica. Estas distribuciones no se ajustan a las esperadas segun los modelos poblacionales neutros propuestos en la bibliografia, debido a la presencia de una serie de posiciones con una elevada frecuencia.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Genetica y evolucion del adn medianamente repetitivo de drosophila buzzatii<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Genetica y evolucion del adn medianamente repetitivo de drosophila buzzatii <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Labrador San Jos\u00e9 Mar\u00eda no <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1995<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Antonio Fontdevila Vivanco<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Roser Gonzalez Duarte <\/li>\n<li>Andr\u00e9s Moya Simarro (vocal)<\/li>\n<li>Sonsoles Campuzano (vocal)<\/li>\n<li>Pere Puigdomenech Rosell (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Labrador San Jos\u00e9 Mar\u00eda no Se ha estimado experimentalmente, por el analisis de 112 clones tomados al [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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