Study the pedigree chart given below.


What does it show?

1. Inheritance of a sex-linked inborn error of metabolism
2. Inheritance of a condition like phenylketonuria as an autosomal recessive trait
3. The pedigree chart is wrong as this is not possible
4. Inheritance of a recessive sex-linked disease like haemophilia

Subtopic:  Pedigree Analysis: Basics | Pedigree Analysis: Problem Solving |
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The mode of inheritance of the trait [shown by red color] in the given pedigree is most likely:

1. Autosomal recessive
2. Autosomal dominant
3. Sex-linked recessive
4. Sex-linked dominant

Subtopic:  Pedigree Analysis: Problem Solving |
 83%
Level 1: 80%+
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