Here's why:
* Genetic Similarity: Humans and chimpanzees share about 98.7% of their DNA. This means we are much more closely related to chimps than the 2% difference suggests.
* Complexity of DNA: The remaining 1.3% difference represents a vast amount of genetic information. Small differences can lead to significant biological changes.
* Evolutionary History: Humans and chimpanzees have been evolving separately for millions of years. This means there are many differences between us, not just a simple 2% figure.
Instead of thinking about percentages, it's more accurate to think about the following:
* Shared Ancestry: Humans and monkeys share a common ancestor. We have evolved from that common ancestor over millions of years, leading to the differences we see today.
* Complex Evolutionary Processes: The process of evolution is incredibly complex, involving changes in genes, morphology, behavior, and more.
* Shared Traits: Humans and monkeys share many traits, including a number of physical characteristics, social behaviors, and cognitive abilities.
The 2% difference idea is a simplification that doesn't reflect the complex evolutionary history of humans and primates.