Não
No entanto, isso não é necessariamente uma coisa tão incomum.
Diálogo de Star Trek V: A fronteira final :
SPOCK: You do not understand me, Captain. Sybok, also, is a son of Sarek.
KIRK: He's your brother brother? You made that up.
SPOCK: I did not.
KIRK: You did too. Sybok couldn't possibly be your brother because I happen to know for a fact that you don't have a brother.
SPOCK: Technically, you are correct. I do not have a brother.
KIRK: You see?
SPOCK: I have a half-brother.
KIRK: I've got to sit down.
McCOY: Let me get this straight. You and Sybok have the same father but different mothers.
SPOCK: Exactly. That is correct. Sybok's mother was a Vulcan princess. After her death, Sybok and I were raised as brothers.
KIRK: Why didn't you tell us this before?
SPOCK: I was not prepared to discuss matters of a personal nature. For that I am sorry.
E de "Journey to Babel":
SAREK: Doctor. My aides and she who is my wife.
(He holds out his right hand with two fingers extended, and a human woman steps forward to touch them.)
AMANDA: Captain Kirk.
KIRK: Our pleasure, madam. As soon as you're settled I'll arrange a tour of the ship. Mister Spock will conduct you.
SAREK: I'd prefer another guide, Captain.
KIRK: As you wish, Ambassador. Mister Spock, we'll leave orbit in two hours. Would you care to beam down and visit your parents?
SPOCK: Captain, Ambassador Sarek and his wife are my parents.