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ADN
Generalidades
Definición
 El ADN (ácido desoxiribonucleico) constituye
el material genético de las células del cuerpo
humano.
 Con un tipo de excepción, el ADN se
encuentra exclusivamente en el núcleo de las
células.
 En el genoma (conjunto integral y
secuenciado del ADN) humano se estima que
hay aproximadamente 50,000 o más genes.
Cromosomas
 Toda célula nucleada contiene 46 cromosomas
(excepto los gametos: los espermatozoides en
el hombre y los óvulos en la mujer, que tienen
23 cromosomas cada uno).
 Los cromosomas son tan sólo la forma como la
célula ordena su ADN combinándolo con ciertas
proteínas.
 En el momento de la concepción, se necesitan
46 cromosomas para procrear un nuevo ser
humano.

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ADN.PPT

  • 2. Definición  El ADN (ácido desoxiribonucleico) constituye el material genético de las células del cuerpo humano.  Con un tipo de excepción, el ADN se encuentra exclusivamente en el núcleo de las células.  En el genoma (conjunto integral y secuenciado del ADN) humano se estima que hay aproximadamente 50,000 o más genes.
  • 3. Cromosomas  Toda célula nucleada contiene 46 cromosomas (excepto los gametos: los espermatozoides en el hombre y los óvulos en la mujer, que tienen 23 cromosomas cada uno).  Los cromosomas son tan sólo la forma como la célula ordena su ADN combinándolo con ciertas proteínas.  En el momento de la concepción, se necesitan 46 cromosomas para procrear un nuevo ser humano.