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IAT IISER2023BiologyPrinciples of Inheritance and Variation

The following pedigree chart shows the inheritance of a genetic disorder. I-2 and III-2 are the only affected individuals. Which one of the following is the correct pattern of inheritance of the disorder, and the genotype of the II-3 individual?

Options

  1. AAutosomal dominant, homozygous for the normal allele
  2. BAutosomal recessive, heterozygous
  3. CAutosomal recessive, homozygous for the normal allele
  4. DX-linked recessive, heterozygous

Correct answer

B. Autosomal recessive, heterozygous

Step-by-step solution

No solution available.

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