Competition among individuals of the same sex is called:
Intrasexual selection reflects key principle in quiz on sexual selection + pyqs, where evolutionary mechanisms shape genetic variation and adaptation. In this context, Intrasexual selection aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why Intrasexual selection fits helps integrate natural selection, environment.
Ref: Andersson, Sexual Selection, Princeton, Mate Choice and Good Genes.