Another example of sex

Another example of sex - Therefore the female may be a...

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Another example of sex-linked inheritance is the blood disease  hemophilia.  In hemophilia, the blood does not clot normally because an important  blood-clotting protein is missing.  The gene for hemophilia occurs on the X chromosome.  As females have two X chromosomes, one X chromosome usually  has the gene for normal blood clotting.
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Unformatted text preview: Therefore, the female may be a carrier of hemophilia but normally does not express hemophilia. Males have no offsetting gene on the Y chromosome, so the gene for hemophilia expresses itself in the male. This is why most cases of hemophilia occur in males....
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This note was uploaded on 12/07/2011 for the course BIOLOGY bi 101 taught by Professor - during the Fall '10 term at Montgomery.

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