In her book "American Science Fiction TV", Jan Johnson-Smith noted that "Tuvix" is one of a recurring type of "Star Trek" episodes concerned with issues of individuality and self. She thematically tied this episode to ' episode "" where the transporter rends Captain Kirk into two separate representations of his psyche, ' character of Jadzia Dax who is of a conjoined species (Trill) that repeatedly goes through a conjoining process when the host organism dies, and "Star Trek: Voyager" episode "" where hybrid Human/Klingon character B'Elanna Torres is split along her bloodline into two separate species. When asked regarding accusations of "Tuvix" and other "Voyager" episodes simply aping previous "Star Trek" series in this way, executive producer Michael Piller called out "Time" for their comments on the matter before conceding, got to keep new people coming in and pitching because otherwise you're going to be retreading an old ground." Seven years later, when writing "" "", Manny Coto took pains to write that episode dissimilarly to "Tuvix".