The term "labile gene" refers to a gene that exhibits instability or variability in its expression levels, and thus influences physiological and biochemical processes in an organism. There are several alternative terms or synonyms for this concept, such as "volatile gene", "turbulent gene", "fluctuating gene", "unstable gene", "erratic gene", "mutable gene", and "variable gene". Each of these reflects different aspects of the labile gene, depending on the specific context and research perspective. For instance, the term "volatile gene" may indicate rapid changes in the gene activity, while "mutable gene" may highlight its potential for mutation and evolution. All in all, these synonyms are helpful in conveying the complexity and dynamic nature of genetic regulation.