Final answer:
The discovery in the Denisova Cave has allowed paleoanthropologists to gain insight into the existence of the Denisovans and their genetic relationships with other human species.
Step-by-step explanation:
The discovery of an archaic human in the Denisova Cave, consisting of a finger bone and 2 teeth, has allowed paleoanthropologists to gain insight into the existence of a previously unknown human species called the Denisovans. Through the analysis of mitochondrial DNA and genomic DNA, scientists have determined that the Denisovans had distinct genetic characteristics compared to modern humans and Neanderthals. Furthermore, the discovery of these fossils has provided valuable evidence of interbreeding between Neanderthals, Denisovans, and modern humans.