Biología Molecular del Desarrollo
Transcript of Biología Molecular del Desarrollo
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Dr. QF Claudio Martínez Debat
LaTraMA ::: Laboratorio de Trazabilidad Molecular AlimentariaSección Bioquí[email protected]
Biología Molecular del Desarrollo
`Drosophila melanogaster`Dentición
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Mutantes homeóticos de Drosophila melanogaster
Antennapedia
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Cascadas y Gradientes
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Tècnicas: clonado molecular,HIS
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Genes que controlan el desarrollo de D. melanogasterDe polaridad del huevo maternos
Sist. anterior BicoidSist. posterior NanosSist. terminal Torso Eje DorsoVentral Dorsal
De segmentacion ZigoticosGap >tipo gap de la cabeza, centrales, terminales.<
hunchback, kruppel, otd, tll, kni, gt…
Regla del par Eve, ftz, hairyPolaridad de segmento
Engrailed, wingless
Selectores homeoticos
Genes homeoticosAntp, Ubx, caudal…
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Eghbx3, stalker, tipo NK2
Eghbx2, tipo MSX
Genes con homeoboxes en Echinococcus granulosus
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ExpresionEctopica
De eyelessMurino
En Drosophila
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Homologias, co-opciones…
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Urbilateria
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Mutantes homeóticosen mamiferos
Regla generalGanancia de funcion: A se transforma en P
Perdida de funcion: P se transforma en A
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Mice with mutations in paralogous genes. This picture, provided by Mario Capecchi's research group at the University of Utah, shows the effects of mutating two of the three genes in one paralogous group in the mouse HOX cluster.
These are the forelimb bones from mice with mutations in two genes from the Hox-11 group. The capital letters A and D represent the normal HOX A-11 or HOX D-11 genes. The small letters a and d represent mutated genes.
For each picture, the genotype of the animal at these two genes is shown. For example, "aa; DD" represents a mouse carrying two mutated copies of the HOX A-11 gene and two normal copies of the HOX D-11 gene.
(a) is a normal forelimb. The letters h, r, and u indicate the three main bones of the forelimb: r=radius, u=ulna, h=humerus.
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Dr. Claudio Martínez Debat
LaTraMA ::: Laboratorio de Trazabilidad Molecular Alimentaria
Sección Bioquí[email protected]
Biología Molecular del Desarrollo
`Drosophila melanogaster`Dentición
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Nota: todas las imágenes contenidas en este documentoson de dominio público y libremente accesibles vía Internet.
El presente material refleja el trabajode preparación de las clases correspondientes
por parte de los docentes responsables, no tiene fines de lucro y sí docentes,
sin pretender sustituir a la bibliografía recomendada
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