The pedigree chart could represent all of the following disorders except a) hemophilia b) sickle-cell disease c) red-green colorblindness d) duchenne muscular dystrophy

The only disorder that cannot be represented using pedigree chart is sickle cell anemia. this because hemophilia, red-green color blindness, and duchenne muscular dystrophy are all X-linked traits. on the other hand sickle cell anemia is an autosomal recessive condition which cannot be represented in the pedigree chart since only sex linked traits are found this chart.   

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