What Makes a Species a Species

The video explores the concept of species classification, focusing on the Biological Species Concept (BSC) and its limitations. It discusses how organisms are classified into species based on their ability to produce fertile offspring, highlighting the challenges with microorganisms, fossils, and hybrids. The video also covers the concept of gene flow and subspecies, using examples like Alder and Willow flycatchers and ring species. It concludes by emphasizing that the BSC is a tool, not an absolute rule, and scientists choose the best method for their study.

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