how did Drs. Peter and Mary Grant verify Darwins theory of natural selection

Answer 1

The Grants verified Darwin's theory of natural selection through their work on the Galápagos finches. They observed that the size and shape of the birds' beaks changed in response to changes in the availability of food on the islands. The birds with beaks that were better suited to the available food sources were more likely to survive and reproduce, passing on their advantageous traits to their offspring. This process of natural selection over many generations resulted in divergence of the finch populations and the evolution of new species. The Grants' research provided strong empirical evidence for Darwin's theory of natural selection and helped to further our understanding of the mechanism of evolution.