What evolutionary concept explains the morphological similarities between *T. maccoyii* and northern species?
Answer
Convergent evolution
Genetic studies indicate that the Southern Bluefin Tuna (*Thunnus maccoyii*) is evolutionarily more distant from the Atlantic (*T. thynnus*) and Pacific (*T. orientalis*) species than previously thought. The similarities in physical appearance and adaptation, such as the torpedo shape and endothermy, shared between these disparate lineages are attributed to convergent evolution. This means that similar environmental pressures—specifically the need to thrive in cold, open ocean environments—drove the independent development of similar adaptations across distinct evolutionary branches, rather than these traits being inherited from a recent common ancestor.
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