Evolución y Selección Natural
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Lamarck's bizarre theory of evolution may turn out to be right after all

Lamarck's bizarre theory of evolution may turn out to be right after all | Evolución y Selección Natural | Scoop.it

Before Charles Darwin, the leading evolutionary theorist was Jean-Baptise Lamarck, who believed organisms acquired traits over their lifetimes that they then passed onto their children.  This theory has been roundly disproved...but in the case of roundworms, Lamarck was actually right.

 

The classic example of Lamarckian evolution is giraffes. According to Lamarck, giraffes developed their long necks by stretching them upwards to feed on tall leaves. In his view, some giraffes managed to stretch their necks out over the course of their lifetime, giving them an advantage over the other giraffes which they then passed onto their children. While some of his basic mechanics weren't far off from what Darwin ultimately developed, Lamarck was led astray by his emphasis on acquired traits instead of the random mutations that underpin Darwinian evolution.

 

But now, two centuries later, Lamarck is getting a small measure of vindication. In at least one species, evolution by acquired traits really does exist, according to researchers at Columbia University.


Via Gary Schmidt
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Rescooped by Olinda Figgini from Religiones. Una visión crítica
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Darwin 'versus' Dios

Darwin 'versus' Dios | Evolución y Selección Natural | Scoop.it
Darwin versus Dios El ateo darwinista Richard Dawkins debatirá esta tarde sobre la existencia de Dios con el Arzobispo de Canterbury.

Via Barzanallana
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Rescooped by Olinda Figgini from Docentes: ¿Inmigrantes o peregrinos digitales?
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What Are the Top Ten Problems with Darwinian Evolution?

What Are the Top Ten Problems with Darwinian Evolution? | Evolución y Selección Natural | Scoop.it

Evolution News and Views (ENV) provides original reporting and analysis about the debate over intelligent design and evolution. See it on Scoop.it, via Era del conocimiento


Via José Brito
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Rescooped by Olinda Figgini from Arqueología, Historia Antigua y Medieval - Archeology, Ancient and Medieval History byTerrae Antiqvae
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El análisis de bacterias de dientes antiguos permite ver la evolución de la dieta a lo largo de la historia - Arqueología, Historia Antigua y Medieval - Terrae Antiqvae

El análisis de bacterias de dientes antiguos permite ver la evolución de la dieta a lo largo de la historia - Arqueología, Historia Antigua y Medieval - Terrae Antiqvae | Evolución y Selección Natural | Scoop.it
Investigadores internacionales, dirigidos por un equipo de la Universidad de Adelaida (Australia) han logrado, a través del análisis de ADN de bacterias calcificadas en los dientes de antiguos esqueletos humanos, analizar la evolución de la dieta humana a lo largo de la historia, desde la Prehistoria a la época Moderna.

Via Terrae Antiqvae
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Lamarckismo; Darwinismo ; Neodarwinismo

Lamarckismo; Darwinismo ; Neodarwinismo | Evolución y Selección Natural | Scoop.it
Neodarwinismo. Tal como no darwinismo, o ambiente é a causa da evolução da espécie. Existe (Já têm conhecimento da variabilidade genética). Os seres vivos que estão melhor adaptados ao ambiente tornam-se mais ...

Via Sandra Seara Alves, Leo Grosz Barufaldi
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Rescooped by Olinda Figgini from Educacion, ecologia y TIC
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FUNDACION CHARLES DARWIN

FUNDACION CHARLES DARWIN | Evolución y Selección Natural | Scoop.it
Fundación Charles Darwin...

Via Ramon Aragon
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"No es la especie más fuerte la que sobrevive, ni la más inteligente, sino la que responde mejor al cambio" - Charles Darwin

"No es la especie más fuerte la que sobrevive, ni la más inteligente, sino la que responde mejor al cambio" - Charles Darwin | Evolución y Selección Natural | Scoop.it
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