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Samenvatting Vergelijkende Biologie celdeling (B-KUL-E05C2A)
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Samenvatting Vergelijkende Biologie celdeling, biomedische wetenschappen jaar 1
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OOFDSTUKZ : CELDELNGT
Bacteriën
Spl ting
:
Enkelvoudig circulair
dubbestrengig
•
,
DNA -1
replicatie
Oorsprong ìbidirectioneel
•
nieuwe chromosomen
tegengestelde
liggen in
•
eindes
>
Vorming septum spits Ing
•
en
' Onder controle van eiwitten
=
clonale reproductie
Eukaryote chromosomen
•
lineaire chromosomen
•
Bestaan uit chromatine n :
complex van DNA eiwitten
•
Hetero chromatinen :
niet tot expressie
•
Eu chromatinen : wel tot expressie
karyotype specifieke chromosomen ieder
•
: voor anders
array van .
Homologe chromosomen
:
maternale en Paterna te cop en
repliceert
van eenzelfde chromosoom ,
Zuster chromatiden
Gerepliceerde chromosomen verbonden
door : Kine toehoren en cohesine -
complex van eiwitten
ijij
, Eukaryote celcyclus
: 5 Stadia
Gi ( Gap fase i )
1
celgroei
:
.
S
synthese
:
2 .
van DNA
•
DNA replicatie Inter fase
•
productie 2 zuster chromatiden
3 .
Gz (Gap fase 2) :
chromosomen
condenseren ,
mitochondria en
organellen repliceren
centromeren repliceren verbonden door cohesine eiwitten
•
,
•
Kinetochoor eiwitten hechten aan centromeren
•
microtubili hechten aan kinetocnoor
•
( en triolen repliceren en
bewegen naar elke cel Pool
4 .
mitose (m ) : 5 fasen
1 . Profase
chromosomen
gecondenceerd
•
•
Cent riolen naar cel Polen
spoelfiguur vorming
•
•
Oplossen nucleaire enveloppe
2 . Prometafase
er
Chromosomen aan
spoelfiguur dmv
•
kinetoc horen
•
2e set microtubili van cel Polen naar
Kine toehoren
•
microtubili trekken chromosomen naar
centrum van de cel
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