In Huntington’s disease, the unaffected persons are homozygous for normal allele $h$. The following is erroneous because

726-945

  • [AIIMS 2015]
  • A

    it shows both male and female affected by Huntingtons disease

  • B

    either person $6$ or $7$ should have the disease, if individual $11$ shows the disease.

  • C

    at least one of the $2$ children $(8,\,9)$ should have the disease

  • D

    all of these

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