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Pedigree Chart of X-Linked Recessive Disorders

A male carryi...

Question

A male carrying a faulty gene for an X-linked recessive disorder will always be affected.

A

True

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B

False

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Solution

The correct option is A True

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

If the father is unaffected by an X linked recessive disorder then his daughters will be free from X linked recessive 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. If the frequency of males affected with an X-linked recessive trait in the human population is 0.20. What will be the frequency of affected females?

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Pedigree Chart of X-Linked Recessive Disorders

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