ATI RN
Pediatric Genetic Questions
Question 1 of 5
Most carcinogens are also mutagens:
Correct Answer: A
Rationale: True. Most carcinogens (e.g., UV, tobacco smoke) cause cancer by inducing DNA mutations.
Question 2 of 5
Male breast cancer is associated with mutations in:
Correct Answer: B
Rationale: BRCA2 mutations increase male breast cancer risk more than BRCA1.
Question 3 of 5
The proportion of babies that have an abnormality identifiable at birth is:
Correct Answer: B
Rationale: Approximately 2-3% (1 in 33-50) of newborns have a major congenital anomaly.
Question 4 of 5
The presence of two or more cell lines from different zygotes in a single individual is known as:
Correct Answer: D
Rationale: Chimaerism is two or more cell lines from different zygotes (e.g., fused embryos); mosaicism is from one zygote.
Question 5 of 5
Which of the following disorders does not show X-linked inheritance?
Correct Answer: B
Rationale: Tay-Sachs is autosomal recessive; others are X-linked.