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Rosalind Franklin, Watson y crick

Alejandro Rodriguez

Created on October 13, 2025

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Rosalind Franklin, Watson y crick

Rosalind Franklin

Rosalind Franklin nació en Londres en 1920. Estudió Física y Química en Cambridge y se especializó en difracción de rayos X, una técnica que permite observar la estructura interna de las moléculas.En el King’s College de Londres obtuvo la famosa “Fotografía 51”, la imagen que mostró por primera vez la forma helicoidal del ADN. Aunque su aporte fue reconocido tardíamente, sus datos fueron esenciales para el descubrimiento del modelo de la doble hélice. También estudió la estructura del carbón y de varios virus, contribuyendo al desarrollo de la biología molecular moderna.

James Watson

James Watson nació en Chicago en 1928. Estudió Zoología y se doctoró en Biología Molecular. Su gran interés fue descubrir cómo se almacena y transmite la información genética.En la Universidad de Cambridge conoció a Francis Crick, con quien colaboró en la creación de modelos moleculares del ADN. Gracias a los datos obtenidos por Franklin, Watson logró identificar el emparejamiento de las bases nitrogenadas, clave para comprender la replicación del ADN. En 1953 propuso, junto a Crick, el modelo de la doble hélice, uno de los hallazgos más importantes del siglo XX.

Francis Crick

Francis Crick nació en 1916 en el Reino Unido y estudió Física, pero luego se dedicó a la biología molecular.En el laboratorio Cavendish de Cambridge unió fuerzas con Watson para descifrar la estructura del ADN.Crick aportó una visión más teórica y matemática al problema. Juntos demostraron que el ADN tiene dos cadenas enrolladas en espiral unidas por pares de bases complementarias. Más adelante, Crick formuló el Dogma Central de la Biología Molecular, que explica cómo fluye la información genética: ADN → ARN → Proteína.

Aporte Principal

En 1953, Watson y Crick publicaron en la revista Nature el modelo de la doble hélice del ADN.Su propuesta fue posible gracias a las fotografías y datos de Rosalind Franklin, quienes sin su conocimiento directo aportaron la pieza clave del rompecabezas. Ese descubrimiento transformó la ciencia: permitió comprender cómo se replica el ADN, cómo se transmite la herencia y cómo se sintetizan las proteínas.

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