Foreign key 'geneassay_fk' references invalid column 'geneassay' in referencing table 'b_SequencingData_seq'. Msg 1750, Level 16, State 0, Line 43 Could not create constraint.

It's best practice to declare the foreign keys according to functional dependencies. E.g. if your other table is about salespeople, then its foreign key should refer to Salespeople.