Great white sharks hold a baffling genetic puzzle: uniform nuclear DNA but divided mitochondrial DNA that defies migration and evolution theories. White sharks show a striking mismatch between the DNA inside their cell nuclei and the DNA within their mitochondria. For years, scientists believed this could be explained by the way great whites migrate. A […]



Summary

Great white sharks exhibit a peculiar genetic anomaly: consistent nuclear DNA across populations but distinct mitochondrial DNA lineages. This challenges conventional understanding of migration and evolution. The uniformity of nuclear DNA suggests extensive interbreeding, yet mitochondrial DNA, inherited maternally, reveals geographically isolated lineages. This contradiction defies theories based on shark migration patterns and raises questions about unknown factors influencing their population structure and genetic diversity. Further research is necessary to fully understand this genetic paradox and its implications for the conservation and management of these apex predators.

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