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Unformatted text preview: What are sex-linked genes? Why do sex-linked disorders affect more males than females? Draw a Punnett square of the transmission of an x-linked trait, first describing the parents and using X and Y as the main genotype letters and A, a as the presence/absence of the trait. What are two sex-linked genetic disorders that we discussed in class? Describe x inactivation. Down syndrome is due to what genetic defect? What can happen if a person receives more than just one x and one y?...
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- Spring '10