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NEET 2009
Exam
NEET
Year
2009
Subject
Zoology
Chapter
Principles of Inheritance and Variation

NEET 2009 · Zoology · Principles of Inheritance and Variation

Study the pedigree chart given below What does it show?

Study the pedigree chart given below Study the pedigree chart given below What does it show?
What does it show?

Options

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

Correct answer

B. Inheritance of a condition like phenylketonuria as an autosomal recessive trait

Step-by-step solution

In the given pedigree chart, squares are representing males and circles females. In F1\mathbf{F}_1 generation, 1-male and 1-female are diseased and in next generation only male is diseased. This shows the inheritance of a recessive sex-linked disease.
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