Summary
Samenvatting DNA - Natuurwetenschappen
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In deze samenvatting vind je alles wat je moet weten over DNA.
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Follownonadevylder
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Natuurwetenschappen1. De celcyclus
2. DNA replicatie,
3. DNA als codesysteem
4. DNA en eiwitsynthese
a. Transcriptie
1. de celcyclus
2 fases
Delingsfase (M-fase)
Interfase
o Groeifase 1 de cel groeit
o Synthese fase (S-fase) aanmaken van extra DNA, DNA X 2
o Groeifase 2 verdere celgroei …
GO-fase = wanneer de cellen zich niet meer splitsen komen ze in deze
fase terecht. Geen celdeling meer aanwezig dus.
De genetische informatie bevindt zich in de celkern of nucleus
Voortplantingscellen ( zaadcel, eicel ) bevatten maar de helft van de
informatie als ze samenkomen zijn ze weer voltallig ( elk 23
chromatinevezels, samen 46)
2. DNA replicatie
Replicatie gebeurd in de S-fase, nadat de cellen in de M-fase verdeeld
werden
DNA strengen hangen vast door waterstofbruggen in de M-fase, deze
worden terug bijgevuld in de S-fase
A–T
G–C
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