cap 5 dna y cromosomas
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Cap 5 DNA y Cromosomas. JA Carde, PhD Universidad Adventista Alberts et al. Introducción. Información genética: Genoma: intrucciones Célula tiene que: almacenar, accesar, traducir, transmitir Repaso: Almacenar – guardar y proteger Accesar – fácil disponibilidad - PowerPoint PPT PresentationTRANSCRIPT
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Cap 5 DNA y
Cromosomas
JA Carde, PhD
Universidad Adventista
Alberts et al.
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Introducción- Información genética: Genoma: intrucciones
- Célula tiene que: almacenar, accesar, traducir, transmitir
-Repaso:
-Almacenar – guardar y proteger
-Accesar – fácil disponibilidad
-Traducir – mecanismos de uso
-Transmisión – copiar y pasar a otras generaciones
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05_01_Chromosomes.jpg
-Asociacion entre rasgos y cromosomas
-Descubiertos siglo 19
-Propiedades de tincion
-Bioquimica: proteina y acidos nucleicos
-Diferencias entre izq y der?
-DNA lleva la informacion genetica
-Proteinas: empaque y regulación
-Para 1940 se negaban a creer esto
-How we know?
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05_03_Griffith.jpg
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05_04_Avery_MacLeod.jpg
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05_05_Hershey_Chase.jpg
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05_02_DNA.jpg
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05_06_compl_pairs.jpg-Enlace covalente entre 5’P y 3’OH-Polaridad-Antiparale-lismo-Complementa-ridad
Enlaces GC son mas estables que enlaces AT
Una hebra de DNA tiene polaridad porque tiene bases distintas en cada extremo.
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05_07_base pairing.jpg
-Vista lateral de una doble helice-Enlace covalente enter 5’P y 3’OH-Polaridad-Antiparalelismo-Complementraidad
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05_08_major_minor_gr.jpg-Space filling model-Conformacion helicoidal-Derecha-10 bases por vuelta 3.4nm/vuelta-0.34nm p/b-Zurcos mayor y menorO, P, H, N
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05_09_Linear messages.jpg
La estructura del DNA provee para un mecanismo hereditario
Como se puede transportar la informacion de forma quimica?
Como se puede copiar con precision?
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05_10_Genes_info.jpg
Que es un Gen? Genotipo vs Fenotipo!
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05_11_Gene_sequence.jpg
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05_12_chromo_painted.jpg
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05_13_chromo_banding.jpg
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05_14_genetic defects.jpg
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05_15_Drosophila gene.jpg
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05_16_chromo_numbers.jpg
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05_17_cell cycle.jpg
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05_18_mitosis.jpg
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05_19_Interphase.jpg
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05_20_less compact.jpg
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05_21_Nucleosomes.jpg
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05_22_8_histone.jpg
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05_23_histone core.jpg
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05_24_Chromatin pack.jpg
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05_25_zigzag model.jpg
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05_26_tightly packed.jpg
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05_27_location_genome.jpg
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05_28_inactivated X.jpg
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05_30_histone tails.jpg