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Andinia.com - Foros / Forums / :: Ver Tema - La sexualidad y la evolución
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La sexualidad y la evolución
http://www.andinia.com/foros/viewtopic.php?f=13&t=865
Página 1 de 1

Autor:  Pablo Edronkin [ Vie Ene 13, 2006 4:47 pm ]
Asunto:  La sexualidad y la evolución

Hoy en día se habla tanto acerca de la sexualidad masculina y femenina, de la salud sexual, de la satisfacción, amor, crecimiento personal, vida en pareja, etc. que nos olvidamos de un simple hecho que es el que en realidad define todo: la sexualidad es una herramienta de la evolución natural de las especies. La sexualidad puede verse desde el punto de vista de la medicina, la psicología o la religión, pero no es nada más que una cuestión propia de la biología.

Sin la sexualidad, la biodiversidad y la abundancia como existen en regiones tales como la Amazonia o cuenca del Río Amazonas no existirían, y nuestro mundo semjaría más bien a un gigantesco cultivo de bacterias con una biomasa muchísimo menor, pero nada más.

En efecto, la sexualidad no existe para otra cosa que asegurar una buena combinación genética y por lo tanto, una mayor diversificación y diversidad de la vida: la reproducción sexual comenzó, aparentemente, hace unos ochocientos millones de años, antes de lo que se conoce como período ediacarense, en el que los animales y vegetales pluricelulares empezaron a abundar sobre la Tierra.

Imagen
Un par de pectínidos fosilizados, hallados en el Cerro Plataforma, Patagonia.

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