Tamera Mowry has a fraternal twin.
Tamera Mowry . She first gained fame for her teen role as Tamera Campbell on the ABC/WB sitcom Sister , Sister ( opposite her identical twin sister Tia Mowry ) . She and her identical twin sister Tia Mowry were in a singing group in the early 1990s called Voices . Twin . Twins can be either monozygotic ( `` identical '' ) , meaning that they develop from one zygote , which splits and forms two embryos , or dizygotic ( `` fraternal '' ) , meaning that they develop from two different eggs .