Nokea
The chromosomal disorder CORRECTLY matched with its karyotype is:
- A. Turner’s syndrome – 45X0
- B. Klinefelter’s syndrome – XYY
- C. Patau’s syndrome – Trisomy 21
- D. Edward’s syndrome – Trisomy 13
Correct Answer: A
Rationale: Step-by-step rationale:
1. Turner's syndrome is characterized by a missing X chromosome, resulting in a karyotype of 45X0.
2. Klinefelter's syndrome involves an extra X chromosome, leading to a karyotype of 47XXY.
3. Patau's syndrome is Trisomy 13, not Trisomy 21.
4. Edward's syndrome is Trisomy 18, not Trisomy 13.
Therefore, the correct answer is A because Turner's syndrome is correctly matched with a karyotype of 45X0.
You may also like to solve these questions
What are possible characteristics of a patient who is at a higher risk for developing uterine cancer?
- A. 35-year-old patient with 2 vaginal births
- B. 16-year-old patient with 28-day menstrual cycle
- C. 67-year old patient taking only estrogen for HRT
- D. 25-year-old patient taking oral contraceptive pills
Correct Answer: C
Rationale: Step-by-step rationale:
1. Uterine cancer risk increases with age, so a 67-year-old patient is at higher risk.
2. Estrogen-only HRT without progesterone increases uterine cancer risk.
3. Other choices are less likely: A has lower age and childbirth may reduce risk, B's age and menstrual cycle are not typical risk factors, and D's oral contraceptives may decrease uterine cancer risk.
The main commissural fiber in the brain is:
- A. Corpus callosum
- B. Anterior commissure
- C. Posterior commissure
- D. Hippocampal commissure
Correct Answer: A
Rationale: The correct answer is A: Corpus callosum. The corpus callosum is the main commissural fiber in the brain that connects the two cerebral hemispheres, allowing for communication and coordination between them. It is the largest and most prominent commissural fiber in the brain, making it the correct choice.
Summary of why other choices are incorrect:
B: Anterior commissure - Connects certain regions of the cerebral hemispheres, but not as prominent or as large as the corpus callosum.
C: Posterior commissure - Connects certain structures in the brainstem, not the cerebral hemispheres.
D: Hippocampal commissure - Connects the two hippocampi, not the cerebral hemispheres.
Human milk can be kept frozen in the freezer section of a side-by-side refrigerator-freezer for
- A. 2 weeks
- B. 3 to 4 months
- C. 6 months
Correct Answer: B
Rationale: Properly stored frozen human milk remains safe and nutritious for several months.
What is the primary structural difference between the male and female urethra?
- A. The male urethra has two functions, whereas the female urethra has one.
- B. The male urethra is up to three times as long as the female urethra.
- C. The female urethra is less protected than the male urethra.
- D. The female urethra is connected directly to the bladder.
Correct Answer: B
Rationale: The correct answer is B: The male urethra is up to three times as long as the female urethra. This is because the male urethra serves a dual function - for both urine and semen passage, requiring a longer length for transportation. In contrast, the female urethra is shorter and primarily functions for urine passage only. Choices A, C, and D are incorrect as they do not address the primary structural difference in length between the male and female urethra.
If a quad screen shows high AFP, and normal hCG, uE3 and INH-A, this indicates
- A. neural tube defect
- B. trisomy 21
- C. multiple gestation
Correct Answer: A
Rationale: Elevated AFP suggests open neural tube defects or abdominal wall defects.