Polyploid Newt Kidney Tubule Adaptation

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• Polyploid newt kidney tubules use fewer, larger cells to maintain identical organ-level structurefinding0.861
  Illustrates that anatomical goals are pursued via flexible molecular mechanisms rather than fixed cell-count programs.
• Polyploid newts maintain normal kidney tubule size via cell number adjustment or single-cell wrapping, using different molecular mechanisms.finding0.854
  From Fankhauser 1945; illustrates top-down control where large-scale morphology is maintained despite drastically wrong cell size.
• Polyploid newts maintain normal kidney tubule diameters using fewer, larger cells.finding0.849
  Fankhauser 1945 finding on anatomical regulation despite ploidy changes.
• Polyploid Newt Kidney Size Compensationfinding0.841
• Single newt cell can wrap around itself to form a kidney tubule when cell size is artificially increased.finding0.804
  From Fankhauser (1945), demonstrates diverse molecular mechanisms serving a higher-level anatomical specification.
• Newt kidney tubule cells, when artificially enlarged, can bend a single cell around itself to achieve correct tubule diameter, illustrating top-down control over molecular mechanisms.claim0.793
  Extreme example of regulative flexibility.
• Enlarged newt cells compensate for increased size by adjusting cell number and can form kidney tubule from a single cell wrapped around itself.finding0.791
  When cell size was doubled, tubules used fewer cells; when quadrupled, a single cell formed the tubule by cytoskeletal deformation, maintaining correct lumen diameter.
• Enlarged polyploid cells produce normal-sized kidney tubules by adjusting cell number and using cytoskeletal bendingfinding0.787
  Shows diverse molecular mechanisms serve higher-level anatomical specification despite radical changes in cell size and quantity.