Which of the following is an enzyme lacking disease?
Correct answer: A. PKU
- A. PKU
- B. Alkaptunuria
- C. Anuria
- D. Dluria
Explanation
Phenylketonuria occurs when parents pass the defective phenylalanine hydroxylase (PAH) gene that causes this disorder on to their children. This gene helps create the enzyme needed to convert phenylalanine to tyrosine. Phenylketonuria is a disorder of amino acid metabolism that occurs in infants born without the ability to normally break down an amino acid called phenylalanine. Phenylalanine, which is toxic to the brain, builds up in the blood.
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Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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