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Sex-linked traits (genes) are traits that are determined by sex and location on chromosome. Most of these sex-linked traits are found on the X-chromosome, this means it is more likely to occur in men than in women because they only have one X-chromosome. The most comon sex-linked traits in humans are hemophilla and colorblindness. (Look on pages 350-351 for more information.)

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Quean Victoria- gave the sex-linked trait hemophilla to the royal family with out knowing it because she was a carrier.

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This DNA strand represents how these traits are passed on to the offspring.