Nursing Elites

1. Which of the following pairs share 100% of their genes?

• A. Biovular twins
• B. Fraternal twins
• C. Dizygotic (DZ) twins
• D. Monozygotic (MZ) twins

Correct answer: D

Rationale: The correct answer is Monozygotic (MZ) twins. Monozygotic twins, also known as identical twins, share 100% of their genes because they originate from the same fertilized egg that splits into two. Fraternal twins (choice B), also known as dizygotic (DZ) twins (choice C), result from two separate fertilized eggs and share approximately 50% of their genes. Biovular twins (choice A) is not a term used in genetics and does not describe a type of twinning.

2. What term is used to describe each member of a pair of genes?

• A. allele
• B. zygote
• C. autosome
• D. node

Correct answer: A

Rationale: The correct answer is 'allele.' An allele refers to one of two or more versions of a gene located at the same position on a chromosome. In genetics, alleles are responsible for variations in inherited traits. Choice B, 'zygote,' is incorrect as a zygote is a fertilized egg cell formed by the fusion of two gametes. Choice C, 'autosome,' is incorrect as autosomes are non-sex chromosomes that determine an individual's genetic traits excluding sex-linked characteristics. Choice D, 'node,' is incorrect as it does not relate to the concept of genes or genetic inheritance.

3. What is the most critical action in caring for the newborn immediately after birth?

• A. Keeping the airway clear.
• B. Fostering parent-newborn attachment.
• C. Drying the newborn and wrapping the infant in a blanket.
• D. Administering eye drops and vitamin K.

Correct answer: A

Rationale: The most critical action in caring for the newborn immediately after birth is keeping the airway clear. This is essential to ensure that the newborn can breathe effectively and prevent any respiratory distress. Fostering parent-newborn attachment, although important, is not the most critical action immediately after birth. Drying the newborn and wrapping the infant in a blanket is important for temperature regulation but is not as critical as maintaining a clear airway. Administering eye drops and vitamin K is typically done later and is not the most critical action immediately after birth.

4. According to a survey by Adhikari and Liu in the year 2013, at birth, women have:

• A. close to 100,000 ova.
• B. around 300,000 to 400,000 ova.
• C. around 100 to 200 ova.
• D. only 500 ova.

Correct answer: B

Rationale: Women are born with approximately 300,000 to 400,000 ova, which gradually decrease in number as they age. Choice A ('close to 100,000 ova.') is incorrect as the actual number is much higher. Choice C ('around 100 to 200 ova.') is incorrect as it underestimates the quantity significantly. Choice D ('only 500 ova.') is incorrect as it greatly underestimates the number of ova present at birth.

5. According to a study in 2014 by Skakkebaek et al., who among the following is most likely to have gynecomastia?

• A. Jennifer, a dancer, who has Down syndrome
• B. Frank, a teacher, who is diagnosed with XYY syndrome
• C. Peter, a fashion designer, who has Klinefelter syndrome
• D. Ria, a gym instructor, who is diagnosed with Turner syndrome

Correct answer: C

Rationale: Individuals with Klinefelter syndrome have an extra X chromosome (XXY) and typically have reduced testosterone levels, which can lead to gynecomastia (enlarged breasts). This condition is not usually associated with Down syndrome (choice A), XYY syndrome (choice B), or Turner syndrome (choice D), making them less likely to have gynecomastia.

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