Final answer:
Despite sharing over 98% identical DNA with chimpanzees, humans exhibit significant anatomical and behavioral differences due to minor genetic variations. These differences highlight the complexity of genetic expression and the influence of both genetics and environment on species development.
Step-by-step explanation:
Humans and chimpanzees are indeed very similar when it comes to our DNA, sharing over 98% identical DNA. However, it's important to note that despite this high degree of genetic similarity, there are significant anatomical and behavioral differences between the two species. These differences are a result of minor genetic changes over time that have led to major morphological and physiological diversifications. For instance, while chimpanzees and humans share a majority of their genes, which suggests a common ancestor, the way those genes express themselves has resulted in different physical characteristics like the protrusion of the jaw or limb length ratios. Moreover, when considering behavior and capabilities, humans exhibit a much broader range of social expressions, complex language use, and technological advancements compared to chimpanzees, our closest living relatives.
Finally, the variation in DNA and social behavior within primate species, including among humans, indicates that one cannot make generalizations about 'natural' behavior based on genetic closeness alone. It is the combination of genetics and an array of environmental factors that gives rise to the tremendous diversity observed across the primate lineage, including within our species.