Nokea
A key finding from the Human Genome Project is:
- A. Approximately 20,500 genes make up the genome.
- B. All human beings are 80.99% identical at the DNA level.
- C. Human genes produce only one protein per gene; other mammals produce three proteins per gene.
- D. Single gene testing will become a standardized test for all pregnant patients in the future.
Correct Answer: A
Rationale: Approximately 20,500 genes make up the human genome.
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The nurse must be cognizant that an individual's genetic makeup is known as his or her:
- A. Genotype.
- B. Phenotype.
- C. Karyotype.
- D. Chromotype.
Correct Answer: A
Rationale: The genotype comprises all the genes the individual can pass on to a future generation.
What is the purpose of carrier screening in the first trimester?
- A. to check the positioning of the fetus
- B. to assess for chromosomal abnormalities in the fetus
- C. to measure the heart rate of the fetus
- D. to identify potential genetic disorders that parents may carry
Correct Answer: D
Rationale: Carrier screening identifies genetic disorders parents may carry, which can affect the baby. It does not check positioning, heart rate, or chromosomal abnormalities directly.
Choose the correct client teaching to follow amniocentesis.
- A. Drink 1 to 2 quarts of clear fluid to replace fluid taken in the procedure.
- B. Resume all normal activities when desired.
- C. Report persistent contractions, vaginal bleeding, fluid leaking, or fever.
- D. Eat a diet with increased iron for the 2 days after amniocentesis.
Correct Answer: C
Rationale: Clients should report any concerning symptoms after amniocentesis, such as contractions, bleeding, or fever.
A 35-year-old woman is 34 weeks pregnant and is diagnosed with oligohydramnios. She asks the nurse to explain how this could affect the pregnancy. Which should the nurse explain to the client? Select all that apply.
- A. The baby’s lungs may be underdeveloped.
- B. The umbilical cord may become compressed.
- C. The mother has developed diabetes mellitus.
- D. It is associated with fetal gastrointestinal abnormalities.
Correct Answer: C
Rationale: Oligohydramnios can cause underdeveloped lungs, compressed umbilical cords, fetal limb abnormalities, and is associated with renal issues. Gastrointestinal abnormalities are less likely.
How many mature ova result from a single cycle of oogenesis?
- A. 1
- B. 2
- C. 3
- D. 4
Correct Answer: A
Rationale: Oogenesis produces one mature ovum per cycle, along with polar bodies that degenerate.