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April 21, 2014

Homework Help: biology

Posted by deb on Saturday, March 15, 2008 at 3:24pm.

Genetic problem

Schilder's disease, which causes a progressive degeneration of the nervous system leading to death at about two years of age, behaves as a simple autosomal recessive trait. If a couple loses their first two children due to Schilder's disease, what is the chance that their third child will develop the disease? S=normal and s=Schilder's disease

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