Non-model organisms are organisms that have not been selected by the research community for extensive study either for historic reasons, or because they lack the features that make model organisms ...

The RNA world hypothesis proposes that early life was based on RNA, which subsequently devolved the storage of information to more stable DNA, and catalytic functions to more versatile proteins.

A rational number can be written exactly in the form \(\frac{a}{b}\), where 𝑎 and 𝑏 are integers, while an irrational number cannot.