Question 1:

Which of the following statements about single gene disorders is correct?

Explanation: C) Single gene disorders are caused by mutations in a single gene. These mutations can result in abnormal protein production or function, leading to various genetic disorders.

Question 2:

Which of the following is an example of a single gene disorder?

Explanation: B) Cystic fibrosis is an example of a single gene disorder. It is caused by mutations in the CFTR gene, which affects the production and function of the cystic fibrosis transmembrane conductance regulator protein.

Question 3:

How are single gene disorders typically inherited?

Explanation: D) Single gene disorders can be inherited in different patterns, including autosomal recessive, autosomal dominant, and X-linked recessive. The specific inheritance pattern depends on the gene involved and the nature of the mutation.

Question 4:

Which of the following is a characteristic of autosomal recessive disorders?

Explanation: C) Autosomal recessive disorders require the presence of two copies of the mutant allele (one from each parent) for the disorder to manifest. Individuals who inherit only one copy of the mutant allele are carriers and do not typically show symptoms of the disorder.

Question 5:

Which of the following is an example of an X-linked recessive disorder?

Explanation: A) Duchenne muscular dystrophy is an example of an X-linked recessive disorder. It is caused by mutations in the dystrophin gene, which is located on the X chromosome. The disorder primarily affects males.