Alternation of Generations

Selang-seling reproduksi seksual dan aseksual, satu generasi bereproduksi secara seksual, generasi berikutnya secara aseksual.

Merriam-Webster Online Dictionary
alternation of generations ()
the occurrence of two or more forms differently produced in the life cycle of a plant or animal usually involving the regular alternation of a sexual with an asexual generation