MITOSIS Flashcards

1
Q

[MITOSIS]
DEFINICION

A

DIVISION CELULAR DE LAS CELULAS SOMATICAS POR LA CUAL UNA CELULA DIPLOIDE FORMA DOS CELULAS DIPLOIDES Y GENETICAMENTE IDENTICAS

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2
Q

[MITOSIS]
FASES

A

CARIOCINESIS = DIVISION NUCLEAR

CITOCINESIS = DIVISION CITOPLASMATICA

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3
Q

[MITOSIS]
FASES DE LA CARIOCINESIS

A

PROFASE
PROMETAFASE
METAFASE
ANAFASE
TELOFASE

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4
Q

[MITOSIS]
QUE OCURRE EN LA PROFASE?

A

NUCLEO: OCURRE LA CONDENSACION DE LAS CROMATINAS QUE ORIGINA LOS CROMOSOMAS

CITOPLASMA: CENTRIOLOS INICIAN LA POLIMERIZACION DE MICROTUBULOS Y MIGRAN PARA LOS POLOS DE LA CELULA

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5
Q

[MITOSIS]
QUE OCURRE EN LA PROMETAFASE?

A

DESINTEGRACION ENVOLTURA NUCLEAR Y DESAPARECE LAMINA INTERNA DE MATERIAL PROTEICO, O SEA CROMOSOMAS LIBRES EN EL CITOPLASMA

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6
Q

[MITOSIS]
QUE OCURRE EN LA METAFASE?

A

CROMOSOMAS ALCANZAN SU MAYOR GRADO DE COMPACTACION, SE ENGANCHAN AL HUSO ACROMATICO Y SE UBICAN EN EL ECUADOR DE LA CELULA

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7
Q

[MITOSIS]
QUE OCURRE EN LA ANAFASE?

A

SE ROMPE EL EQUILIBRIO DE FORZAS, ALCANZAN MICROTUBULOS POLARES, SE ACORTAN MICROTUBULOS CINETOCORICOS Y EL CROMOSOMA SE PARTE

MIGRACION DE CADA CROMATIDE HERMANA A UN POLO DE LA CELULA

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8
Q

[MITOSIS]
QUE OCURRE EN LA TELOFASE?

A

SE RESTITUYE ENVOLTURA LA ENVOLTURA NUCLEAR Y LOS CROMOSOMAS COMIENZAN A DESCONDENSARSE

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9
Q

[MITOSIS]
CITOCINESIS DEFINICION

A

SEPARACION DEFINITIVA DEL CITOPLASMA CON FORMACION DE 2 CEL HIJAS

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10
Q
A
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