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Chromosome theory of inheritance
Mendelian genes ave specific loci on chromosomes, and it's the chromosomes that undergo segregation and independent assortment
Production of offspring with new combinations of traits inherited from two parents
occaional mishap, members of homologous chromoses don't move apart properly during meiosis I : sister chromatids don't separate during meiosis II
A gene on one chromosome is silenced: allele on homologous chromose is free to be expressed
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