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Rodney Grimes
5 December, 03:14
How does Homologous structures support evolution
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Cassis
5 December, 03:52
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Puntos más importantes:
Las pruebas de la evolución provienen de muchas áreas diferentes de la biología:
Anatomía. Las especies comparten características físicas porque dichas características estaban presentes en un ancestro común (estructuras homólogas).
Biología molecular. El ADN y el código genético reflejan la ascendencia compartida de la vida. La comparación de las secuencias de ADN puede mostrar qué tan emparentadas están las especies.
Biogeografía. La distribución global de los organismos y las características únicas de las especies isleñas reflejan la evolución y el cambio geológico.
Fósiles. Los fósiles documentan la existencia de especies pasadas, extintas actualmente, pero emparentadas con las especies que vemos hoy en día.
Observación directa. Podemos observar la evolución directamente a pequeña escala en los organismos con ciclos de vida cortos (como los insectos resistentes a pesticidas).
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