Especially for plants, growth and tissue differentiation in each generation is governed by different genetic programs, which are initiated either by fertilization (haploid to diploid) or meiosis (diploid to haploid).
Having 2 distinct ontologies demands a rich genome: far beyond the needs of animals, with a single ontogeny that is, however mind-boggling, relatively simple. Yet development is triggered by a few key genes capable of jiggering regulatory networks.
To take full advantage of AoG, its practitioners rely upon environmental cues, from which genetic connection is made via existential epigenetics. One might otherwise call it “life experience,” but spores are not exactly living it up.