, MEIOSE = 2 opeenvolgende celdelingen waardoor er uit één diploïde , 4 haploïde cellen ontstaaann.
● verhoopt in 4 fasen + cytokinese
● voorbereiding is identeiek de zelfde als bij de interfase mitose
Belang ● Productie van haploïde gameten
○ Meiose voorkomt een progressieve verdubbeling van het aantal chromosomen bij een bevruchting
● Productie van genetisch unieke gameten
○ Variatie in gameten
■ door recombinatie van DNA door crossing-over (tijdens profase 1)
■ door toevallige combinatie van chromosomen door mixing
● Mixing = tijdens anafase: toevallig migreren van maternale of paternale homologe
chromosomen naar één kant van de cel → genetisch unieke gameten
● Genetische variatie
○ voor in stand houden van de soort (bij gewijzigde leefomstandigheden)
○ Voorbeeld: organismen bestand tegen koude
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller priscilliavandroogenbroeck. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $4.31. You're not tied to anything after your purchase.