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Down's Syndrome

Is autosomal-...

Question

Is autosomal-linked recessive trait & autosomal-linked recessive disease same or different?

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Solution

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Yes, these terms can be used alternatively.

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Q. Match column I with column II and select the correct option from the given codes.

	Column I		Column II
A.	Autosomal recessive trait	(i)	Downs syndrome
B.	Sex-linked recessive trait	(ii)	Phenylketonuria
C.	Metabolic error linked to autosomal recessive trait	(iii)	Haemophilia
D.	Additional 21st chromosome	(iv)	Sickle cell anaemia

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. 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. Pick out the correct statements.

I. Haemophilia is a sex linked recessive disease.
II. Inheritance pattern of haemophilia is the same as that of color blindness.
III. Phenylketonuria is an autosomal recessive gene disorder.
IV. Sickle cell anaemia is an X-linked recessive gene disorder.

Q. Study the pedigree chart. What does it show?

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