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Linea de tiempo ADN

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Acá dejo un muy breve linea de tiempo del ADN, espero que les sirva, también tiene imagenes para relacionar mejor los conceptos. Good luck !

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Linea de tiempo ADN

  1. 1. Nacimiento de la Genética como ciencia: Gregor Mendel descubre las leyes de la herencia.<br />El citólogo alemán Walther Flemming comprueba la división longitudinal de los cromosomas durante la mitosis celular.<br />1869<br />1900<br />1882<br />1865<br />Friedrich Miescher descubre en espermatozoides de peces y otro material biológico la sustancia responsable de la transmisión de los caracteres hereditarios (ADN).<br />El alemán Correns, el austríaco Tchermak y el holandés De Vries redescubren, independientemente, las leyes de Mendel. De Vries informa en 1901 por primera vez de mutaciones.<br />
  2. 2. El químico alemán Robert Feulgen describió un método para teñir el ADN por medio de un colorante llamado fucsina.<br />Frederick Griffith demostró que las bacteriaseran capaces de transferir información genética mediante un proceso llamado transformación.<br />1919<br />1930<br />Phoebus Levene identificó que un nucleótido está formado por una base, un azúcar y un fosfato.<br />1928<br />1914<br />Levene y su maestro Albrecht Kossel probaron que la nucleína de Miescher es un ácido desoxirribonucleico formado por cuatro bases nitrogenadas, el azúcar desoxirribosa y un grupo fosfato.<br />
  3. 3. William Astbury produjo el primer patrón de difracción de rayos X que mostraba que el ADN tenía una estructura regular.<br />Oswald Theodore Avery publicó que la herencia genética reside en el ADN.<br />1940<br />1953<br />Chargaff realizó algunos experimentos que le sirvieron para establecer las proporciones de las bases nitrogenadas en el ADN. <br />1944<br />1937<br />El biólogo estadounidense James Watson y el físico inglés Francis Crick propusieron el modelo de la doble hélice de ADN para representar la estructura tridimensional del polímero. <br />
  4. 4. Vernon Ingram, descubre que la anemia falciforme era causada por el cambio de un aminoácido en la hemoglobina.<br />El doctor argentino César Milstein y el doctor alemán George Kohler, del Laboratorio de Biología Molecular de la Univ. de Cambridge descubrieron los anticuerpos.<br />1964<br />1977<br />Howard Temin demuestra, empleando virus de ARN, excepciones al dogma central de Watson.<br />1975<br />1956<br />Científicos norteamericanos introducen por primera vez en una bacteria, material genético de células humanas.<br />
  5. 5. Se inicia oficialmente el Proyecto Genoma Humano (PGH), con financiación estatal, destinado a descifrar el código genético humano.<br />Nace en Gran Bretaña el primer bebé probeta, engendrado mediante fertilización artificial o "in vitro".<br />1982<br />1997<br />Sale al mercado en Estados Unidos, el primer medicamento producido por manipulación genética (insulina).<br />1990<br />1978<br />Investigadores escoceses presentan a Dolly, una oveja, el primer mamífero producido por clonación, a partir de una célula adulta.<br />
  6. 6. Se completa con éxito el Proyecto Genoma Humano con el 99% del genoma secuenciado con una precisión del 99,99%.<br />Primer mapa completo del genoma de una planta comestible: el arroz.<br />2002<br />Nace en Argentina Pampa Mansa, la primera ternera clonada y transgénica que produce la hormona de crecimiento humana en su leche. <br />2003<br />2001<br />

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