Migration of birds for feeding and breeding are well known. These birds return back to their living places with their off- springs. The butterflies also do such migration; but there is a difference. In the migrated place they breed and bring up their generation; but they do not return back –they die there itself. Their next generation only returns to their original living place – without any guidance either from them or from anybody else! How is this possible? Do their generation have the replica of their brain to guide or do the generation have the ‘instinct’ (formed out of their parents’ past memory and experience) passed down to them genetically? Can any Zoologist or Genetics Scientist explain this wonder behavior of butterflies?
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