Research overview: early biochemical genetics of African and Asiatic lions

Before genomic sequencing, researchers used protein and allozyme variation to compare lion populations and found that the isolated Asiatic lions of Gir harbored strikingly little biochemical genetic variation relative to African lions, paralleling early findings in the cheetah. This overview surveys that pioneering work and its interpretation as evidence of a recent, severe bottleneck in the Indian population. It discusses how these biochemical studies foreshadowed later molecular and genomic confirmation, established the Asiatic lion as a conservation-genetics concern, and helped launch the comparative study of genetic depletion across endangered felids, even as the specific marker techniques were superseded.