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  • Created by: Agata
  • Created on: 07-02-13 09:45
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Crossing over
Crossing over and independent segregation of the
homologous chromosomes helps genetic variation. Crossing over is when chromatids (still in bivalent
pairs) cross over, forming a chiasma. When the two formed gametes fuse at fertilisation randomly, yet
more variation is produced amongst the offspring.


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