WGU D115 OA AND PRE-OA EXAM | 100% Q& A

WGU D115 OA AND PRE-OA EXAM | 100% Q& A/WGU D115 OA AND PRE-OA EXAM | 100% Q& A/WGU D115 OA AND PRE-OA EXAM | 100% Q& A 1. In the most commonly seen form of Turner Syndrome, how is the X chromosome affected? A) Both cells have two X chromosomes. B) Each cell has only one X chromosome; either the cell lacks one entirely or only one X is present. C) Each cell has an extra X chromosome, for a total of three. D) Each cell has an extra autosome, not a sex chromosome. Correct answer: B) Each cell has only one X chromosome; either the cell lacks one entirely or only one X is present. 2. What is the first step during the first time genetic counseling? A) Diagnosis of the genetic disorder B) Pedigree analysis C) Obtaining informed consent D) Discussing recurrence risk Correct answer: A) Diagnosis of the genetic disorder 3. The FNP schedules a 35yearold primigravida (firsttime pregnancy) for an initial prenatal visit at 10 weeks gestation. The FNP would explain that the purpose of prenatal genetic screening is to: A) Diagnose the presence of a genetic disorder B) Determine the likelihood of certain conditions C) Provide definitive results D) Replace the need for ultrasound Correct answer: B) Determine the likelihood of certain conditions 4. A 7yearold child is evaluated for short stature. Chromosomal analysis reveals a 45,X karyotype. Which of the following is the most likely diagnosis? A) Klinefelter syndrome B) Turner syndrome C) Down syndrome D) Edwards syndrome Correct answer: B) Turner syndrome 5. The FNP is counseling a couple with a family history of cystic fibrosis. What is the inheritance pattern of cystic fibrosis? A) Autosomal dominant B) Autosomal recessive C) Xlinked dominant D) Xlinked recessive Correct answer: B) Autosomal recessive 6. Which of the following is a common clinical feature of Down syndrome? A) Tall stature B) Single palmar crease C) Macrocephaly D) Hypertonia Correct answer: B) Single palmar crease 7. A newborn is noted to have ambiguous genitalia. Which of the following is the most appropriate initial step? A) Immediate surgical correction B) Karyotype analysis C) Referral to endocrinology only D) Genetic counseling after age 2 Correct answer: B) Karyotype analysis 8. Which prenatal screening test is most sensitive for detecting neural tube defects? A) Amniocentesis for karyotype B) Maternal serum alphafetoprotein (AFP) C) Chorionic villus sampling D) Maternal serum estriol Correct answer: B) Maternal serum alphafetoprotein (AFP) 9. A 21yearold woman is a carrier for an Xlinked recessive disorder. What is the risk that her son will be affected? A) 0% B) 25% C) 50% D) 100% Correct answer: C) 50% 10. The most common cause of inherited intellectual disability is: A) Down syndrome B) Fragile X syndrome C) Turner syndrome D) Klinefelter syndrome Correct answer: B) Fragile X syndrome 11. Which of the following is NOT a feature of Klinefelter syndrome? A) Tall stature B) Gynecomastia C) Webbed neck D) Small testes Correct answer: C) Webbed neck 12. In autosomal dominant inheritance, what is the risk that an affected parent will transmit the disorder to each child? A) 10% B) 25% C) 50% D) 100% Correct answer: C) 50% 13. A 2weekold male infant presents with vomiting, dehydration, and ambiguous genitalia. Laboratory studies show hyponatremia and hyperkalemia. Which of the following is the most likely diagnosis? A) Congenital adrenal hyperplasia B) Turner syndrome C) Klinefelter syndrome D) Fragile X syndrome Correct answer: A) Congenital adrenal hyperplasia 14. Which of the following is a feature of Marfan syndrome? A) Short stature B) Arachnodactyly C) Microcephaly D) Macroglossia Correct answer: B) Arachnodactyly 15. A couple has a child with sickle cell disease. What is the probability that their next child will also have sickle cell disease, assuming both parents are carriers? A) 0% B) 25% C) 50% D) 100% Correct answer: B) 25% 16. Which of the following is a characteristic finding in Edwards syndrome (trisomy 18)? A) Micrognathia B) Macroglossia C) Tall stature D) Polydactyly Correct answer: A) Micrognathia 17. The triple screen test in pregnancy includes all of the following EXCEPT: A) Alphafetoprotein B) Estriol C) Inhibin A D) Human chorionic gonadotropin Correct answer: C) Inhibin A 18. Which of the following is associated with an increased risk of neural tube defects? A) Folic acid deficiency B) Vitamin D deficiency C) Iron deficiency D) Vitamin K deficiency Correct answer: A) Folic acid deficiency 19. Which of the following is the most common chromosomal abnormality causing miscarriage? A) Trisomy 21 B) Monosomy X C) Trisomy 16 D) Trisomy 13 Correct answer: C) Trisomy 16 20. A 10yearold boy presents with tall stature, learning difficulties, and small testes. Karyotype is 47,XXY. What is the diagnosis? A) Turner syndrome B) Klinefelter syndrome C) Down syndrome D) Fragile X syndrome .....INSTANT DOWNLOAD