Basic trope: A stalker wants someone's DNA.
- Straight: Alice wants Bob's seed to give birth to a son with the powers of both.
- Exaggerated: Alice wants Bob to mate with her to become the parents of a new race of higher beings.
- Downplayed: Alice wants some DNA from Bob in order to complete the creation of a hybrid being.
- Justified:
- Alice is a succubus.
- Supernatural DNA is fading off in the world and Alice wants to preserve it, so she wants Bob's to keep it.
- Inverted: Bob's DNA programming impels him to mate with Alice.
- Subverted: Alice seems to go after Bob's DNA, but everything is a ruse to mask her true intentions.
- Double Subverted: ...however, she also goes after his DNA with the objective of creating a hybrid son.
- Parodied:
- Alice chases Bob everywhere with a giant syringe.
- Alternately, she chases him while propositioning him unprotected sex.
- Bob is initially interested in having sex with Alice until she creeps him out by rambling about his "seed".
- Alice wants Bob's semen for a science experiment.
- Alice wants Bob's semen so she can plant it in Carol's drink as a prank.
- Zig-Zagged: ???
- Averted: Alice does not go after Bob's DNA.
- Enforced: The author wants to introduce a new character with both Alice and Bob's powers.
- Lampshaded: "She wants his DNA to give birth to a mix-and-match son? Man, that's gross."
- Invoked: The Great Cabal expect Alice to get Bob's DNA to give birth to The Chosen One.
- Exploited: ...but the Secret Circle is waiting for him to born in order to kidnap him and bring him up as their own Tyke Bomb.
- Defied: Bob throws himself to a lava pit to eliminate all of his DNA and impede Alice from getting it.
- Discussed: "Alice, You Always Failed Biology, didn’t you?"
- Conversed: ???
- Deconstructed: Alice successfully collects Bob's DNA, giving birth to Carson, but:
- Instead of a superpowered Chosen One, Carson is a deformed, handicapped child who dies soon, as supernatural genetics are not easy and Evil Is Not a Toy.
- Carson is a superpowered Chosen One, but he never gets truly loved or cared due to him being seen by his mother as a weapon and by his father as a monster.
- Reconstructed: ...however, thanks to his own friends and loved ones, he manages to live a fulfilling life away from the sins of his parents, finding his own way.
- Played For Laughs: Alice gets Bob's DNA, but by using a horrifying machine which gives a painful procedure, and the consequent child is a literal mix-and-match offspring of the two.
- Played For Drama: Carson lives in a perennial self-hate and shame as a consequence of his origin.
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