samenvatting van alle hoorcolleges, werkzittingen en vragensessies. Alle te kennen leerstof staat erin. Door dit document te leren haalde ik in eerste zit een 15/20.
, 1) interfase
a. G1 fase = celjunctie (2n, 4C)
b. S fase = DNA synthese (2n, 4C)
c. G2 fase = checken
2) M fase = mitose + cytokinese (4n, 4C -> 2n, 2C)
3) G0 fase = postmitotische cellen vb: neuronen
CEL DIVISIE EN TRANSMISSIE VAN DNA NAAR DOCHTERCELLEN
Profase DNA condensatie => bescherming breuken
Centriolen naar polen
Prometafase Kernmembraan kapot
°microtubuli => chromosomen capteren
Metafase Chromosoomcongressie
° metafaseplaat
Anafase Zusterchromatiden uit elkaar
Telofase °celnucleus, DNA deconcensatie
Identieke dochtercellen
Cytokinese Celdeling, verdeling cytoplasma
Verkeerde binding microtubuli
Goede regulatie nodig!
Cohesine complex = na replicatie zusterchromatiden samenhouden
Foute hechting microtubuli
Meiose Mitose
Man: 1 cel (2n) -> 4 gameten (n) 1 cel (2n) -> 2 cellen (2n)
Vrouw: 1 cel (2n) -> 1 gameet (n) + poollichaampjes 10^17 keer per leven
Meiose 1: reductie = homologen uit elkaar
• Verdeling homologe autosomen
• Verdeling homologe sexchromosomen
• °chiasmata
Meiose 2: verdeling zusterchromatiden
Cohesine complex Man: 55 chiasmata/cel/meiose
Vrouw: 90 chiasmata/cel/meiose
=> genetische mappen vrouw langer
Leptotheen DNA condensatie
SPO11 => °DSB
Zygotheen Alle chromosomen samennemen => °bivalenten
Homologen (bivalenten) zoeken = RAD51
° synapsis = SCP2 en 3
Pachytheen Synapsis compleet = SCP1
Cross over + vorming chiasmata
DBS opgelost
Diplotheen Synapsis afbreken, cohesine behouden
Bivalenten enkel samen door chiasmata & cohesine
Diakynese DNA condensatie
Profase -> metafase
Alignering chromosomen
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