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2009 Pearson Education Canada Inc.. . 3.1 Mechanisms of Heredity. The Biology of Heredity Single Gene InheritanceGenetic Disorders. . 2009 Pearson Education Canada Inc.. . 3.1 The Biology of Heredity. . . Gametes (sperm/egg cells) have 23 chromosomes eachWhen combined, they provide 23 pairs o
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