NUR 622 Genetics Module 2 Exam with Questions and Answers

NUR 622 Genetics Module 2 Exam with Questions and Answers All of the following are consistent with a fragile X syndrome diagnosis in males except: a. microorchidism following onset of puberty b. large body habitus c. large ears d. hyperactivity ANSWER Correct: A. microorchidism following onset of puberty. A key sign of fragile X syndrome in males is large testicular (macroorchidism) rather than microorchidism after the beginning of puberty. Incorrect: Physical findings consistent with fragile X syndrome in males include large body habitus (b), large forehead and ears ©, and prominent jaw. behavioral findings can include hyperactivity (D) and intellectual disability. Which of the following chromosomal syndromes is a common etiology of social and verbal developmental delays in boys? a. Tay-Sachs disease b. cystic fibrosis c. fragile X d. Trisomy 18 ANSWER Correct: C. fragile X Fragile X syndrome is the most common cause of autism in either gender and can lead to Social and verbal developmental delays in boys (C). Klinefelter's disease (XXY male) is also associated with developmental issues, particularly related to verbal development.