Thursday, February 3, 2011

Meiosis II Summary

PROPHASE II
A spindle apparatus forms.
Chromosomes composed of two chromatids associated at the centromere
METAPHASE II
Chromosomes are positioned on the metaphase plate as in mitosis.
Crossing over in meiosis 
Two sister chromatids of each chromosome are not genetically identical
ANAPHASE II
Centromeres divide or replicate to allow separation of sister chromatids;
The chromatids move toward opposite poles as individual chromosomes.
ANAPHASE II
Add:
Direction of chromosome movement in Anaphase I at right angles to that in Anaphase II.
TELOPHASE II AND CYTOKINESIS
Nuclei form
Chromosomes begin decondensing
Cytokinesis occurs
4 daughter haploid cells
Each genetically distinct from the other
It’s Video Time!

1 comments:

jhony said...

I am a biology student and kind of hate it! hate doing its projects as well! currently am going on different biology posts and posting there! see how bored i am

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