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There is a gene R on the long arm of the same chromosome as the huntington gene.

(1) Draw a labelled diagram to show the chromatids of a diploid cell at the end of anaphase 1 of meiosis, for a person who is heterozygous for both characters.

(2) Draw a labelled diagram to show the product cells derived from this cell at telophase 2 stage of meiosis, NO CROSSING OVER.

(3) State what difference there would be in the product cells at telophase 2 of meiosis if there had been one crossing over position halfway between the Huntington disease gene and the centromere.

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