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Título original:
Research seminar: INTRINSIC AND EXTRINSIC FACTORS AFFECTING THE RATE OF EVOLUTION: STORIES OF DOGS AND FROGS
Documentos relacionados
Título:
Seminario de investigación: FACTORES INTRÍNSECOS Y EXTRÍNSICOS QUE AFECTAN A LA TASA DE EVOLUCIÓN: HISTORIAS DE PERROS Y RANAS
Idioma:
Inglés
Duración:
58 min.
Signatura:
VI06238
Fecha de producción:
13/02/2015
Nivel:
Estudios universitarios
Resumen:
The origin of biodiversity has always fascinated naturalists. Since Darwin, we tend to see natural selection as responsible for this diversity. However, selection needs molecular diversity upon which to act. What is the origin of this molecular diversity.
Using dogs as a model system we investigated some of the mechanisms that have been suggested to produce different rates of morphological change in dogs and wolves. These differences may have arisen, in part, as a result of the demographic changes and relaxation of selective forces suffered by the domestic species. We can expect these processes to equally affect natural systems.
By analyzing the diversity of a family of Neotropical frogs we investigated environmental factors that may be associated with changes in the rate of molecular evolution. We also studied whether these extrinsic factors may be associated with the rate of diversification in this family. These two model systems offer unique perspectives to better understand some of the mechanisms contributing raw genetic diversity for selection to act upon.
Colección:
Museo Nacional de Ciencias Naturales, CSIC
País de producción:
España
Ficha técnica:
Ponente: Carles Vila, Estación Biológica de Doñana, CSIC.
Presentación: Borja Milá. Dpto. Biodiversidad y Biología evolutiva. MNCN-CSIC
Producción y edición: Servicio de Audiovisuales-Mediateca MNCN-CSIC.
Observaciones:
Seminario organizado por el Departamento de Biodiversidad y Biología Evolutiva del Museo Nacional de Ciencias Naturales (MNCN), CSIC, y retransmitido en directo a través de Cienciatk.
Productora:
Museo Nacional de Ciencias Naturales (MNCN)
C/ José Gutiérrez Abascal, 2 28006 Madrid Tlno: 91 411 13 28 Fax: 91 564 50 78 http://www.mncn.csic.es
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