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Heart Diseases

Phenylketonur...

Question

Phenylketonuria is autosomal recessive disorder of the chromosome

A

11

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B

12

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C

16

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D

17

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Solution

The correct option is B $12$
Phenylketonuria is an autosomal recessive disorder, caused by mutations in both alleles of the gene for phenylalanine hydroxylase (PAH), found on chromosome 12. In the body, phenylalanine hydroxylase converts the amino acid phenylalanine to tyrosine, another amino acid.

So, the correct answer is '12'.

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Similar questions

Pick out the correct statements.

(i) Haemophilia is a sex-linked recessive disease.

(ii) Down's syndrome is due to aneuploidy.

(iii) Phenylketonuria is an autosomal dominant gene disorder.

(iv) Phenylketonuria is an autosomal recessive gene disorder.

(v) Sickle-cell anaemia is an X-linked recessive gene disorder.

Q. Match the human genetic disorders with the causative abnormal chromosomes.

	List I		List II
A	Sickle cell anaemia	1	Sex linked (X chromosome)
B	Colour blindness	2	Autosomal chromosome 7
C	Phenylketonuria	3	Autosomal chromosome 11
D	Cystic fibrosis	4	Autosomal chromosome 4
E	Huntington's disease	5	Autosomal chromosome 12

Q. Pick out the correct statements (a) Haemophilia is a sex-linked recessive disease (b) Down syndrome is due to aneuploidy (c) Phenylketonuria is an autosomal recessive gene disorder (d) Sickle cell anaemia is X-linked recessive gene disorder.

Q. Which among the following is an autosomal recessive genetic disorder?

Q. Match the human genetic disorder with the causative abnormal chomosome.

(a)	Sickle cell anaemia	1.	Sex linked (X-chromosome)
(b)	Colour blindness	2.	Autosomal chromosome 7
(c)	Phenylketonuria	3.	Autosomal chromosome 11
(d)	Cystic fibrosis	4.	Autosomal chromosome 4
(e)	Huntington's disease	5.	Autosomal chromosome 12

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