From the Archives: Researchers seeking to discover the truth about human origins are turning to animal hybrids for insights. What they’ve found may lead to more questions than answers.
Ligers, tigons, and pizzlies, oh my! What do these critters have in common? They are the offspring of animals that belong to distinct lineages, or populations that have diverged evolutionarily. In other words, they are hybrids. A liger is produced when a male lion and a female tiger mate. A tigon is the offspring of a male tiger and a female lion, and a pizzly, as cute as it sounds, is a hybrid of a grizzly bear and a polar bear—so it isn’t an animal you’d want to cuddle.
And the application of species concepts has implications for how researchers interpret hominin species, including those in the genus Homo—even Homo sapiens.
At the 85th annual meeting of the American Association of Physical Anthropologists in April 2016, the topic of one of the opening sessions was how the study of human evolution could be informed by an understanding of hybridization in other animals. Biologists and anthropologists shared what is known about hybridization in birds, monkeys, bears, mice, amphibians, and wild and domestic dogs.
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