Question

the situation in which two or more genes are responsible for producing a single trait is called
○ linkage.
○ polygeny.
○ polyzygous.
○ pleiotropy.

Explanation:

• Linkage: Refers to genes being located close on a chromosome and inherited together, not about multiple genes for one trait.
• Polygeny (Polygenic Inheritance): Defined as multiple genes (two or more) contributing to a single trait (e.g., height, skin color).
• Polyzygous: Not a standard term for this concept; likely a distractor.
• Pleiotropy: One gene affecting multiple traits, opposite of the described scenario.

Answer:

B. polygeny