Studies of the Offspring of Nonschizophrenic Co-Twins from Discordant Twin

question 88

Multiple Choice

Studies of the offspring of nonschizophrenic co-twins from discordant twin pairs suggest that ________

• A) environmental factors play a more important role than genetic factors in the origin of schizophrenia.
• B) genetic factors cause schizophrenia, while environmental factors are essentially unimportant.
• C) a genetic predisposition to schizophrenia may remain unexpressed in some individuals unless it is released by some unknown environmental factors.
• D) the heritability of schizophrenia involves the transmission of a single dominant gene.

Understand key historical milestones in genetics and genomics.

Recognize the impact of genetics and genomics on health and disease.

Identify the role of family health history in assessing health risks.

Understand the concept of epigenetics and its influences on health.

---

Definitions:

Classical Conditioning

The educational process of repeatedly combining two stimuli; a reaction that initially occurs in response to the second stimulus eventually happens in response to the first stimulus alone.

Scientific Methodology

A systematic approach to research in which a problem is identified, relevant data are gathered, a hypothesis is formulated from these data, and the hypothesis is empirically tested.

Ivan Pavlov

A Russian physiologist known for his work in classical conditioning, particularly his experiments with dogs, leading to the concept of the Pavlovian response.

Learning Objectively

The process of acquiring knowledge or skills in a way that is not influenced by personal feelings, interpretations, or prejudice.