{"id":82955,"date":"2018-03-10T00:07:03","date_gmt":"2018-03-10T00:07:03","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/seleccion-en-la-linea-germinal-de-drosophila-melanogaster\/"},"modified":"2018-03-10T00:07:03","modified_gmt":"2018-03-10T00:07:03","slug":"seleccion-en-la-linea-germinal-de-drosophila-melanogaster","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/seleccion-en-la-linea-germinal-de-drosophila-melanogaster\/","title":{"rendered":"Seleccion en la linea germinal de drosophila melanogaster."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Cassandra Extavour <\/strong><\/h2>\n<p>La sincron\u00eda del ciclo celular de las c\u00e9lulas germinales de las hembras de drosophila melanogaster es heterog\u00e9nea a lo largo del desarrollo. Durante la migraci\u00f3n embionaria, est\u00e1n sincronizadas en g2. A partir de la eclosi\u00f3n de la larva, proliferan mot\u00f3ticamente hasta llegar al n\u00famero final de c\u00e9lulas por g\u00f3nada, cuando quedan mit\u00f3ticamente quiescentes y sincronizadas en g2, hasta el comienzo de la oog\u00e9nesis. Clones de c\u00e9lulas germinales \u00ed\u00a7homocig\u00f3ticas silvestres en un fondo gen\u00e9tico heterocig\u00f3tico ovod1 tienen una ventaja proliferativa sobre las c\u00e9lulas vecinas heterocig\u00f3ticas. El alelo ovod1 en heterocigosis no afecta a la identidad de las c\u00e9lulas germinales en cuanto a las expresiones de los genes vasa, hu-li-tai-shao, bicd y bam. en fondos mutantes heterocig\u00f3ticos para deficiencias recesivas en adultos, clones homocig\u00f3ticos silvestres contribuyen preferentemente a las g\u00f3nadas. cambios en la dosis de los muchos genes requeridos por la l\u00ednea germinal son detectados por las c\u00e9lulas germinales, resultando en fenotipos dominantes de alelos que son recesivos a nivel de individuo y conduciendo a la selecci\u00f3n celular. Como muchos de los genes utilizados en la l\u00ednea germinal tambi\u00e9n son requeridos para la morfog\u00e9nesis som\u00e1tica, su selecci\u00f3n en la l\u00ednea germinal es simult\u00e1neamente una selecci\u00f3n para los mismos genes en el soma. esta selecci\u00f3n es anterior a la selecci\u00f3n natural de los organismos, ya que tiene lugar precig\u00f3ticamente.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Seleccion en la linea germinal de drosophila melanogaster.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Seleccion en la linea germinal de drosophila melanogaster. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Cassandra Extavour <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 14\/01\/2000<\/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>bellido Garcia De Diego Antonio Garcia<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: enrique Cerd\u00e1 olmedo <\/li>\n<li>Francisco Murillo  araujo (vocal)<\/li>\n<li>pedro Ripoll quintas (vocal)<\/li>\n<li>lucas Sanchez rodriguez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Cassandra Extavour La sincron\u00eda del ciclo celular de las c\u00e9lulas germinales de las hembras de drosophila melanogaster [&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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