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ATI RN · Obstetrics and Pediatrics · Common Pediatric Genetic Disorders

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

A proto-oncogene can become an oncogene when:

A. It is shut off

B. It is translocated next to a highly expressed gene

C. Growth factors decrease cell division rate

D. A person is exposed to pesticides

Correct Answer: It is translocated next to a highly expressed gene

Question 2 of 5

The treatment of choice for labial adhesions is

A. topical erythromycin

B. oral erythromycin

C. oral estrogens

D. topical estrogens

Correct Answer: topical estrogens

Question 3 of 5

Marfan syndrome is caused by mutations in the gene which encodes

A. Collagen

B. Dystrophin

C. Elastin

D. Fibrillin

Correct Answer: Fibrillin

Question 4 of 5

Which of the following mutations is most likely to be lethal?

A. Substitution of adenine for cytosine

B. Substitution of cytosine for guanine

C. Substitution of methylcytosine for cytosine

D. Insertion of one nucleotide

Correct Answer: Insertion of one nucleotide

Question 5 of 5

Of the following, the one which carries the higher rate of congenital heart disease is

A. Turner syndrome

B. Williams syndrome

C. Down syndrome

D. Cri du Chat syndrome

Correct Answer: Down syndrome

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