MEJOZA I. Flashcards

1
Q

PROFAZA I.

A

Kromosomi se zgostijo (kondenzirajo)
Jedrni ovoj razpade
Nastane delitveno vreteno
Homologni kromosomi se namestijo drug ob drugemu (po dva in dva) –> nastanejo bivalenti
Zgodi se prekrižanje, prekrižata se nesestrski kromatidi

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2
Q

BIVALENTI

A

Kromatidne tetrade

Pari dvokromatidnih homolognih kromosomov, postavljeni drug ob drugem.

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3
Q

PREKRIŽANJE

A

Crossing-over
Prekrižata se nesestrski kromatidi
REZULTAT: dedni zapis materinega kromosoma se kombinira z dednim zapisom očeta

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4
Q

ANAFAZA I.

A

Homologna kromosoma vsakega bivalenta se ločita in potujeta proti nasprotnima poloma celice

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5
Q

TELOFAZA I. IN CITOKINEZA I.

A

Kromosomi prispejo na nasprotna pola.

Citoplazma se razdeli na dva dela.

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6
Q

TELOFAZA I. IN CITOKINEZA I.

A

Kromosomi prispejo na nasprotna pola.

Citoplazma se razdeli na dva dela.

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