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curiosoperoinutil.com :: Ver Tema - evolucion:nuevo lamarckismo
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evolucion:nuevo lamarckismo
https://curiosoperoinutil.com/forum/viewtopic.php?f=2&t=571
Página 1 de 1

Autor:  Pipistrellum [ Mar 04 Jul 2006, 17:11 ]
Asunto:  evolucion:nuevo lamarckismo


Autor:  el gato cuantico [ Mar 04 Jul 2006, 17:33 ]
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Autor:  Buti [ Mar 04 Jul 2006, 18:32 ]
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Autor:  eljose [ Mar 04 Jul 2006, 19:21 ]
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Autor:  e-milius [ Mar 04 Jul 2006, 19:27 ]
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Autor:  ocularis [ Mar 04 Jul 2006, 21:10 ]
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Autor:  el gato cuantico [ Mié 05 Jul 2006, 02:17 ]
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ojo, que este tipo de transmision de caracteres no es que rebatiera la teoria de la selección natural, sino que constituiria una excepción al dogma de la Biología Celular (curiosamente, este dogma tiene más "boquetes" que la teoria, pero en fin, son nombres comunmente aceptados)

me explico, el dogma dice que la informacion pasa de DNA->RNA->Proteínas. Dado que la transmisión del caracter es desde el padre al hijo, que lo unico que comparten es ADN, pues no se explica como una proteína (Inmunoglobulina) puede modificar el DNA (de celulas germinativas) para la transmisión de la información.

(lo del boquete: consiste en que los retrovirus pueden pasar de ARN a ADN, y que los priones son muy malos y puñeteros, pero en ningun caso es algo tan bestia como lo de los ratones)

Autor:  Pipistrellum [ Lun 17 Jul 2006, 10:18 ]
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Autor:  Heimy [ Lun 17 Jul 2006, 12:22 ]
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Autor:  Pipistrellum [ Lun 17 Jul 2006, 12:45 ]
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Autor:  Pipistrellum [ Sab 09 Dic 2006, 15:54 ]
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Autor:  El_Crazy_Xabi [ Sab 09 Dic 2006, 17:46 ]
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Autor:  el gato cuantico [ Lun 11 Dic 2006, 13:49 ]
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Autor:  Pipistrellum [ Mié 16 May 2012, 19:15 ]
Asunto:  Re: evolucion:nuevo lamarckismo

Esto es un caso de epigenetica?

Los casos de epigenetica que he oido, eran sencillos. Por ejemplo la tendencia a engordar.

Pero como se transmitiria la información inmunologica, parece algo mucho mas complejo que un activar o desactivar.

Autor:  El_Crazy_Xabi [ Jue 17 May 2012, 06:04 ]
Asunto:  Re: evolucion:nuevo lamarckismo

La inmunidad no se transmite, ya que se basa en la seleccion de poblaciones de celulas somaticas (linfocitos).

Pero si recibimos proteccion a traves de la leche materna por medio de IgA, y esa inmunizacion depende de la que tenga la madre. Pero es transitoria y no tiene que ver con la genetica del neonato.

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