A loss-of-function mutation that depends on special circumstances is called

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A conditional mutation is one where the loss of function of the gene depends on specific circumstances, such as temperature or the presence of certain chemicals. This is different from a null mutation, which completely eliminates gene function, and a hypomorphic mutation, which reduces but does not eliminate gene function. Dominant-negative mutations occur when the mutated gene product interferes with the function of the normal gene product, and codominant mutations occur when both alleles contribute to the phenotype.

A Loss-Of-Function Mutation That Depends on Special Circumstances Is Called