alleryPhenylketonuria is best described as
Aa chromosomal aneuploidy
Ban acquired infection
Ca nutritional deficiency
Dan inborn error of metabolism
Answer & Solution
Correct answer: D. an inborn error of metabolism
1. Some Mendelian disorders act by disabling a single enzyme.
2. Phenylketonuria is an inborn error of metabolism.
3. It is inherited as an autosomal recessive trait.
4. Being inborn and inherited, it is neither acquired nor nutritional in origin.
_Source: syllabus Biology Ch4 'Principles of Inheritance and Variation'_
Keep practising Unit 5B: Mendelian Genetics & Inheritance
Browse all Unit 5B: Mendelian Genetics & Inheritance questions for AP Biology, or explore more Biology topics.
Related questions
Which one does not belong?Complete the monohybrid resultTrue or false: Mendel's peasDo the Mendel arithmeticSort each genotypeMatch each genetics term to its meaningMendel deduced that each parent in a monohybrid cross contributes:Mendel's 1865 publication reported crosses involving how many characteristics?