Claim: Tamera Mowry has a fraternal twin.
Evidence: She first gained fame for her teen role as Tamera Campbell on the ABC/WB sitcom Sister , Sister -LRB- opposite her identical twin sister Tia Mowry -RRB-.
Twins can be either monozygotic -LRB- `` identical '' -RRB- , meaning that they develop from one zygote , which splits and forms two embryos , or dizygotic -LRB- `` fraternal '' -RRB- , meaning that they develop from two different eggs.