Achondroplasia Achondroplasia Is an Autosomal Dominant Disorder, However Homozygous Dominant

question 1

Multiple Choice

Achondroplasia Achondroplasia is an autosomal dominant disorder, however homozygous dominant individuals do not have achondroplasia - they either die before birth or very shortly thereafter. The homozygous recessive condition is normal. A dwarf couple decide to have children. Use this information to answer the following question(s) . In the example above, what is probability that the couple will have a child with achondroplasia?

• A) 0
• B) 1/4
• C) 1/3
• D) 2/3
• E) 1/2

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