Final answer:
Model organisms are necessary in research to understand biological phenomena and diseases without harming humans. The aim of selecting an organism for a research experiment is to find a model that shares similarities with the condition being studied and provides insights into human physiology.
Step-by-step explanation:
Why it's necessary to use model organisms in research:
Model organisms are extensively studied in research to understand specific biological phenomena. They provide insights into the workings of the human body without risking harm to humans. For example, studying model organisms allows for a better understanding of disease processes.
The basis aim of selecting an organism for a particular research experiment:
When selecting an organism for a research experiment, the aim is to choose a model organism that shares similarities with the organism or condition being studied. The model organism should react to the disease or treatment in a way that resembles human physiology, although biological activity in a model organism doesn't guarantee the same effect in humans. The aim is to gather information that can be applied to other organisms and develop drugs or treatments for human diseases.