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#Question id: 4725


Ptosis (droopy eyelid) may be inherited as a dominant human trait. Among 30 people who are heterozygous for the ptosis allele, 10 have ptosis and 20 have normal eyelids. What is the penetrance for ptosis?

#XL - T Zoology
  1. 50 %       

  2. 33%     

  3. 75%         

  4. 25%


Answer:- Option(s): 2


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