lunes, 22 de diciembre de 2014

ADN recombinante en la naturaleza: Transferencia genética de un Virus a una célula huésped.

Durante muchas infecciones virales, las secuencias del DNA viral se incorporan a uno de los cromosomas de la célula huésped. Este DNA puede permanecer ahí por largo tiempo. Cuando se producen nuevos virus a partir del DNA incorporado, estos pueden integrar, por error, genes humanos en el genoma del virus, creando así un virus recombinante. Cuando un virus de este tipo infecta a otras células, transfiere además una parte del DNA de la célula huésped anterior. Ocasionalmente, los virus traspasan las barreras de la especie para infectar nuevas especies.
 
 Bibliografía:
¿Cómo se recombina el DNA en la naturaleza?
Artículo. Ejemplo de virus recombinante.

2 comentarios:

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