ENFERMEDADES GENÉTICA (generalidades) Flashcards

1
Q

Tipos de enfermedades genética 👑

A
  • cromosomopatías
  • monogénicas
  • multifactoriales
  • mecanismos no clásicos (mitocondriales)
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2
Q

Definición de cromatina

A

Es el genoma compactado
Está en el nucleo y tiene aspecto homogéneo
Se condensa durnate la división celulas –> CROMOSOMAS

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3
Q

Meiosis generalidades

A

MEIOSIS I
* recombinación y segregación cromosómica
* gametocitos secundarios con 23 cromosomas de 2 cromátidas de cada uno

MEIOSIS II
* células precursoras de los gametos con 23 cromosomas de una sola cromátida

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4
Q

Leptoteno

A

cromosomas homólogos comienzan a alinearse
* elemento axial

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5
Q

Cigoteno

A
  • cromosomas se aparean → complejo sinaptonémico (andamio)
  • cromosomas homólogos se les denomina bivalente o tétrada
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6
Q

Paquiteno

A
  • Se concluye el complejo sinaptonémico → finaliza al sinapsis
  • Sitios de recombinación son los “hot spots”.
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7
Q

Diploteno

A
  • Desaparece el complejo sinaptonémico los cromosomas permanecen unidos por medio de quiasmas
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8
Q

Diacinesis

A
  • huso meiótico se ensambla
  • cromosomas se preparan para su segregación
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9
Q
A

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10
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A
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11
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12
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