Nursing Elites

1. What does the genetic study of identical twins reared apart help to clarify?

• A. Differences in brain function
• B. Genetic influence on behavior
• C. Interaction between genetics and environment
• D. The role of environmental factors alone

Correct answer: C

Rationale: The correct answer is C: 'Interaction between genetics and environment.' The genetic study of identical twins reared apart helps in understanding how both genetics and environment play a role in shaping an individual's traits and behaviors. This type of study allows researchers to tease apart the effects of genetic inheritance from those of environmental influences. Choices A, B, and D are incorrect because the study of identical twins reared apart specifically focuses on the interplay between genetics and environment, rather than solely on differences in brain function, genetic influence on behavior, or the role of environmental factors alone.

2. To overcome her fear of balloons due to the loud sound they might make when popping, Bella must sit in a room filled with balloons while the therapist pops each one. After a while, Bella realizes that her fear is unjustified and even begins to pop balloons herself. This technique is known as?

• A. Systematic desensitization
• B. Aversion therapy
• C. Flooding
• D. Extinction

Correct answer: C

Rationale: The correct answer is C, Flooding. Flooding is an exposure therapy technique where a person is exposed to their fear at full intensity until the fear subsides. In this scenario, Bella is exposed to her fear of balloons in a controlled environment until she realizes her fear is unjustified. Choice A, Systematic desensitization, involves gradual exposure to the fear stimulus paired with relaxation techniques. Choice B, Aversion therapy, aims to create a negative association with a stimulus to reduce unwanted behavior. Choice D, Extinction, refers to the gradual decrease in the strength or frequency of a conditioned response.

3. In order for one to have a recessive trait (e.g., having red hair), the person must receive?

• A. At least one copy of a recessive gene from a parent
• B. Two copies of a recessive gene, one from each parent
• C. At least one copy of a recessive gene and at least one copy of a dominant gene
• D. At least two copies of a recessive gene from one parent

Correct answer: B

Rationale: Recessive traits are expressed when an individual inherits two copies of the recessive gene, one from each parent. Therefore, the correct answer is B. Choice A is incorrect as one copy of a recessive gene is not sufficient to display a recessive trait. Choice C is incorrect because having at least one copy of a dominant gene is unrelated to expressing a recessive trait. Choice D is incorrect because two copies of a recessive gene must come from both parents, not just one.

4. What is a person's total genetic endowment?

• A. Phenotype
• B. Genotype
• C. Chromosomes
• D. DNA

Correct answer: B

Rationale: The correct answer is B: Genotype. A genotype refers to a person's total genetic endowment, representing the specific genetic makeup inherited from their parents. This includes all the genes and genetic information contained in an individual's DNA. Choices A, C, and D are incorrect because: A) Phenotype refers to the observable characteristics resulting from the interaction of genetics and the environment; C) Chromosomes are physical structures that contain genes, not the total genetic endowment itself; D) DNA carries genetic information but is just one component of an individual's total genetic endowment.

5. Cross-cultural research on stress demonstrates that ________.

• A. Depression is a common response to life challenges in all countries studied.
• B. Stress rarely leads to any evidence of illness in non-Western cultures.
• C. Responses to stress vary cross-culturally.
• D. Culture-specific reactions are not seen to respond to alterations in the environment.

Correct answer: C

Rationale: Cross-cultural research on stress demonstrates that responses to stress vary cross-culturally. Choice A is incorrect because depression being a common response in all countries studied is not supported by cross-cultural research findings. Choice B is incorrect as it generalizes that stress rarely leads to illness in non-Western cultures, which is not universally true. Choice D is incorrect as culture-specific reactions can indeed respond to alterations in the environment, as observed in various cross-cultural studies.

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