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#Question id: 5327


In the human pedigree shown here, the daughter indicated by the black circle (II-1) has a form of deafness determined by a recessive allele. What is the probability that the phenotypically normal son (II 3) is heterozygous for the gene?

#XL - T Zoology
  1. 3/4          

  2. 2/3           

  3. 1/4           

  4. 1/2


Answer:- Option(s): 2


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