Final answer:
When searching the Arabidopsis Interactome database, the locus number should be entered without the splice variant indicator, as this allows for a comprehensive retrieval of all gene interactions.
Step-by-step explanation:
To search the Arabidopsis Interactome database, you should enter the locus number without the splice variant indicator (.1, .2, etc). This is True. When entering a locus number into a database, omitting the splice variant indicator helps in retrieving all potential interactions associated with the gene without specificity to particular splice forms. This method is used to provide a comprehensive view of potential interactions that the gene product might participate in across different forms. In database searches like MASCOT and others, this approach is commonly practiced to ensure that no potential information is missed due to the specificity of splice variants.