Do Caribbean lizards prove that evolution repeats its own design?
In short: Across the Caribbean, distinct islands host anole lizards that look remarkably similar. This video examines whether these physical parallels, known as ecomorphism, suggest a shared evolutionary path or independent development, using DNA and physical testing to uncover how these creatures arrived at their identical forms.
The four major Caribbean islands—Cuba, Hispaniola, Jamaica, and Puerto Rico—are home to a dense population of anole lizards. Researchers have observed that lizards on different islands share striking physical traits, a phenomenon termed ecomorphism. The central mystery is whether these specific forms evolved once and then migrated, or if they evolved independently on each island.
By utilizing a battery of physical and DNA assessments, scientists are working to determine if evolution follows a repeatable pattern. This investigation into the origins of these lizards offers a clearer view of the mechanisms driving evolutionary change.
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- Summary by Intellect · source: The Lizard's Tale 102: Does Evolution Repeat Itself?
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