Final answer:
A model system is a species or biological system extensively studied to understand a specific biological phenomenon and can provide insights applicable to different organisms.
Step-by-step explanation:
A model system refers to a species or biological system that is extensively studied to understand a specific biological phenomenon, with the goal of applying that knowledge to other species.
Model organisms allow scientists to gain insights into biological processes without directly studying humans, which can be ethically and practically challenging. Results from a model system can be applicable to different organisms because many biological processes are conserved across species.
This means that findings from studying a model organism can provide valuable information and guidance for understanding similar processes in other organisms, including humans.