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biologia II

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Cromosomas (Cromosomas)

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Universidad Francisco Marroquín Nombre:
Faculta de Medicina Carné:
Biología Humana II – 2025
Hoja de Repaso: Cromosomas y Meiosis
Utiliza dibujos, imágenes, símbolos (rastrados a mano o digitales) para esquematizar la definición de los siguientes
términos de vocabulario, usando si es posible solo diagramas, o cuando sea indispensable, algunas palabras.
Diagrama lo que son: cromatina, cromosoma, cromosomas homólogos, cromátidas hermanas, tetrada/bivalente.




En clase dibujamos y repasamos cómo se organizan los cromosomas durante la metafase de cada división de meiosis
(metafase I y metafase II), y la combinación de cromosomas que resulta en cada célula luego de cada una de las
divisiones. Aumentando un poco la dificultad, completen el mismo ejercicio solo que ahora comenzando por una
célula diploide con seis cromosomas (2n = 6).




Durante la profase I de la primera división de meiosis se encuentran y emparejan los cromosomas homólogos
formando las tétradas. Para cada etapa de la profase I, describe qué está sucediendo con la formación del complejo
sinaptonémico y los pares de cromosomas homólogos que une.
Leptoteno Cigoteno Paquiteno Diploteno Diacinesis

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Uploaded on
August 28, 2026
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2026/2027
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Mariana
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