Capitulo 2: Gametogenesis Flashcards

1
Q

Cuantos entrecruzamientos se dan entre cromosomas homologos?

A

30-40 total (1 o 2 por cromosoma)

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2
Q

2 cosas que aumentan la variabilidad genética

A

1) Entrecruzamiento
2) Distribución aleatoria de cromosomas homólogos en células hijas

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3
Q

Fase mas larga del foliculo

A

Fase antral / vesicular

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4
Q

Qué secreta la teca interna del foliculo vesicular maduro (de Graff)

A

Esteroides

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5
Q

Función de la teca externa del foliculo vesicular maduro (de Graff)

A

Fusión con el tejido conectivo ovárico

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6
Q

Trisomía 21

A

Down

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7
Q

Trisomía 18

A

Edwards

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8
Q

Trisomía 13

A

Patau

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9
Q

Trisomía 47 XXY

A

Klinefelter

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10
Q

Monosomía 45 X

A

Turner

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11
Q

Sx triple X

A

47 XXX
2 corpusculos de barr
1/1000 mujeres

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12
Q

Sx por microdeleciones e impronta genómica

A

15q11 o 15q13

Materno: Angelman, risa
Paterno: Prader-Willi, gónadas y criptorquidia

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13
Q

Sx por macrodeleciones

A

Cri du chat

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14
Q

Sx por cualquier progenitor

A

Miller Dieker: delecion 17p3, convulsiones

Sx 22q11: delecion, ~esquizo

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