Meiosis Flashcards

1
Q

¿Qué es la Meiosis?

A

cuando las células hijas tienen la mitad de los cromosomas. Ocurre en los gametos, para células sexuales.

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2
Q

Fases de la meiosis

A

Se divide en meiosis 1 y meiosis 2, compuestas ambas por profase, metafase, anafase y telofase

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3
Q

Profase 1

A

Se parean los cromosomas paterno y materno

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4
Q

Profase 1 fases

A

1) Leptoteno
2) Cigoteno
3) Paquiteno
4) Diploteno
5) Diacinesis

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5
Q

Fase leptoteno

A

condensación y aparemiento de los cromosomas

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6
Q

Fase cigoteno

A

formación del complejo sinaptonemico que permite estar juntos a los cromosomas

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7
Q

Fase paquiteno

A

se completa el complejo y se entrecruzan los cromosomas

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8
Q

Fase diploteno

A

se desarma el complejo sinaptonemico, se observa el Chiasma (el cruzamiento)

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9
Q

Fase diacenesis

A

se prepara para la metafase y se pierde la membrana nuclear

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10
Q

Metafase

A

los cromosomas se alinean a la mitad de la célula, las cromátidas homologas se orientan al mismo polo

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11
Q

Anafase

A

los cromosomas se van a polos opuestos en la 2 se separan las cromátidas hermanas

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12
Q

Telofase

A

se separa la célula y se forma la membrana nuclear

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13
Q

De la meiosis resultan…

A

4 células hiploides

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