Biology
General
Easy

Question

Given below is a pedigree chart of a family with five childeren. It shows the inheritance of attached ear-lobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals

Which one of the following conclusions drawn is correct -

  1. The parents are homozygous recessive    
  2. The trait is Y - linked    
  3. The parents are homozygous dominant    
  4. The parents are heterozygous    

The correct answer is: The parents are heterozygous

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