The term "biogenetic law" refers to a scientific concept that describes the observation that embryos of different species go through similar stages during development, implying common ancestry. However, there are alternative terms that can be used interchangeably with biogenetic law to convey the same meaning. These synonyms include "recapitulation theory", which suggests that ontogeny recapitulates phylogeny, implying that an individual's development mirrors the evolutionary history of its species. Another synonym is "embryonic parallelism", highlighting the parallel developmental patterns among different species during embryogenesis. Furthermore, "Haeckel's law" refers to the idea that an organism's development through various stages mirrors its evolutionary progression. All these synonyms shed light on the interconnectedness between embryonic development and evolutionary history.