Which example best describes pleiotropy?
Understand the Problem
The question asks for the best example of pleiotropy. Pleiotropy refers to a single gene affecting multiple phenotypic traits. The options provided relate to signaling molecules and their actions. We need to identify which option demonstrates one signaling molecule having different (multiple) functions.
Answer
Phenylketonuria (PKU) is a classic example of pleiotropy where a single gene mutation affects multiple traits.
A classic example of pleiotropy is phenylketonuria (PKU), a human disease resulting from a single gene mutation that affects multiple traits.
Answer for screen readers
A classic example of pleiotropy is phenylketonuria (PKU), a human disease resulting from a single gene mutation that affects multiple traits.
More Information
Pleiotropy occurs when one gene influences two or more seemingly unrelated phenotypic traits. This is important in genetics because it shows how a single gene can have diverse effects on an organism.
Tips
Students may confuse pleiotropy with polygenic inheritance. Pleiotropy is when one gene affects multiple traits, while polygenic inheritance is when one trait is affected by multiple genes.
Sources
- Pleiotropy - Wikipedia - en.wikipedia.org
- Pleiotropy - an overview | ScienceDirect Topics - sciencedirect.com
- The best example for pleiotropy is :- - Doubtnut - doubtnut.com
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