Definition of "identical twin" []

• One of two siblings produced from the splitting of a single zygote. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "The brother or sister of someone with the disorder has a 10-percent chance of getting it — yet an identical twin has less than a 50-percent chance, even with an identical genetic blueprint."
• "However, the likelihood that the identical twin of a homosexual male will also be gay is about 20 percent compared with 2–4 percent of males in the general population, indicating that sexual orientation is genetically influenced but not hardwired by DNA, and that whatever genes are involved represent predispositions, not predeterminations."
• "Father Diavolo uses his black arts to transform Lilith into the Queen's identical twin (coyly referred to in the script as "Queen Elizabeth the Second")."