Most Genetic Disorders of Humans Are Caused by

question 58

Multiple Choice

Most genetic disorders of humans are caused by

• A) multiple alleles.
• B) recessive alleles.
• C) a mutation that occurs in the egg, sperm, or zygote.
• D) dominant alleles.

---

Definitions:

Schizophrenia

A serious mental illness marked by altered cognition, feelings, communication, self-identity, and actions.

Natural Experiments

Observational study designs where the researcher does not control the exposure but can study its effects due to external factors acting as an "experiment."

Internal Validity

The degree to which a study or experiment accurately demonstrates a causal relationship between the variables being tested, without the influence of external factors.

External Validity

The extent to which the findings of a study can be generalized to other settings, populations, or time periods.