Basic Trope: A clone is made of someone by transforming someone else into a copy.
Straight: Alice uses a magic spell to transform Bob into a perfect copy of Carl.
Exaggerated: Alice transforms Bob, herself and several other people into perfect copies of Carl.
Downplayed: Bob is only partly transformed, gaining some of Carl's quirks and cosmetic features.
Justified: Alice needs a clone of Carl, but it would take several years for them to grow. Transforming somebody else into a copy makes more sense.
Inverted: Alice transforms a clone of Carl into a unique individual named Bob.
Subverted: It appears that Alice's spell transformed Bob into Carl...but it turns out it just subjected them to a "Freaky Friday" Flip.
Double Subverted: Alice did this as part of the process of copying Carl onto Bob
Parodied: Alice wants a copy of herself for some Zany Scheme, so she transforms Bob into one...by having him wear her Nice Hat. Bob immediately starts having to fight the compulsion to act like Alice and everybody acts as if he looks exactly like her.
Zig Zagged: Sometimes people are cloned from scratch, other times clones are made by transforming people.
Averted: Nobody is cloned.
Enforced: The show is either hard enough science fiction or low enough fantasy that creating a clone from scratch isn't plausible.
Lampshaded: "Couldn't you have just given Bob a mask or something?"
Invoked: Bob tricks Alice into turning him into a copy of Carl so he can carry out a Kill and Replace plan.
Exploited: Carl passes Bob off as his twin so they can make some easy cash as experimental subjects.
Defied: It's noted that no matter how hard you try, you cannot make someone exactly like somebody else through any means.
Discussed: "Maybe we could turn Bob into a copy of Carl so he can go in his place?"
Conversed: "Oh, I get it; Alice turned Bob into a copy of Carl so he'll die in his place."
Implied: It's hinted that Alice's Carl clones were made by forcefully transforming individuals, but this never comes up.
Played For Laughs: People constantly get Carl and Carl!Bob mixed up, creating confusion.
Played For Drama: Bob/Carl struggles with both the fact that he's lost his old identity and isn't the real Carl.