How could changes in development explain differences in the forelimbs of different vertebrates?

Changes in development can explain differences in the forelimbs of various vertebrates through the concept of evolutionary developmental Biology (evo-devo). Variations in gene expression during embryonic development can lead to differences in limb structure and function, as seen in the diverse adaptations of forelimbs for flying in birds, swimming in whales, and grasping in primates. Modifications in the timing and regulation of developmental pathways can result in the diversification of limb morphology, reflecting the evolutionary pressures faced by different species. Consequently, these developmental changes illustrate how similar genetic frameworks can produce a wide range of anatomical outcomes in response to environmental demands.