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  • Phenylketonuria is an example of :  Option: 1 Incomplete dominance  Option: 2</

Phenylketonuria is an example of :
 

Option: 1

Incomplete dominance
 


Option: 2

Linkage
 


Option: 3

Pleiotropy 
 


Option: 4

Codominance 
 


Answers (1)

best_answer

 

 

As we have discussed in Pleiotropy -

  • The gene of Phenylketonuria in human beings is an example of Pleiotropy. The disease is caused by mutation in the gene (present on chromosome 12) that codes for the enzyme phenylalanine hydroxylase (single gene mutation). It results in the accumulation of phenylalanine and is not converted to tyrosine. This manifests itself through phenotypic expression characterized by mental retardation and a reduction in hair and skin pigmentation. Hence, the correct option is (c).
  • Hence, the correct option is (c).
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Riya

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