An 8-week-old infant presents to his pediatrician for a well-baby checkup. Physical exam reveals a murmur and an echocardiogram confirms a ventricular septal defect. Which of the following genetic factors would most likely accompany this diagnosis?

Question

Quizplus · Accepted Answer

Down syndrome is a genetic condition caused by the presence of an extra copy of chromosome 21. It is common for individuals with Down syndrome to have congenital heart defects, including ventricular septal defects. The other genetic factors listed (Huntington disease, color blindness, and hemophilia) are unrelated to this particular cardiac anomaly.

An 8-Week-Old Infant Presents to His Pediatrician for a Well-Baby