What are the 7 characteristics a gene must possess?

A gene must possess the following seven characteristics: it must be able to replicate accurately to ensure genetic continuity; it should encode information for the synthesis of proteins or functional RNA; it must be subject to mutation, allowing for variation; it should be expressed in a regulated manner, ensuring appropriate timing and levels; it needs to be located on a specific locus within chromosomes; it should be heritable, passing from one generation to the next; and it must interact with other genes and the environment to influence phenotypic traits.