Polydactyly syndrome is a result of regulatory mutation in this particular gene
Added by Jeremiah C.
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Step 1: Polydactyly syndrome is a condition characterized by the presence of extra fingers or toes. Show more…
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You are studying a family in which a number of individuals have polydactyly. Polydactyly is inherited in an autosomal dominant way. You notice the affected individuals all have slightly different phenotypes. For example, some have fully formed 6th fingers while others have incompletely formed ones. The polydactyly-causing allele is the same in all the affected individuals. What's happening here?
Adi S.
Philip's father, paternal aunt and uncle, and paternal grandmother were all born with polydactyly, an autosomal dominant condition where extra fingers or toes are present. Philip was born with the normal number of fingers and toes, so he was confident he had not inherited the mutation for polydactyly. Philip's wife Sarah had no family history of polydactyly, so they were surprised when their daughter Emily was born with two extra fingers and toes. The polydactyly mutation is most likely
Marfan Syndrome is an autosomal dominant disorder that arises from a mutation in the FBN1 gene and leads to widespread problems in the skeletal, cardiovascular, and nervous systems. This is an example of: Epistasis Pleiotropy Complementation Incomplete Dominance
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