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10.1  - Meiosis

3.3
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6.6a

Assessment statements

DCS Topic Code Statement Guidance
10.1.U1 Chromosomes replicate in interphase before meiosis.   
10.1.U2 Crossing over is the exchange of DNA material between non-sister homologous chromatids.   
10.1.U3 Crossing over produces new combinations of alleles on the chromosomes of the haploid cells.   
10.1.U4 Chiasmata formation between non-sister chromatids can result in an exchange of alleles.   
10.1.U5 Homologous chromosomes separate in meiosis I.   
10.1.U6 Sister chromatids separate in meiosis II.   
10.1.U7 Independent assortment of genes is due to the random orientation of pairs of homologous chromosomes in meiosis I.   
10.1.S1 Drawing diagrams to show chiasmata formed by crossing over.  Diagrams of chiasmata should show sister chromatids still closely aligned, except at the point where crossing over occurred and a chiasma was formed.

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