The comparison of DNA content between species can be a complex topic, and it's important to note that genome size is not always directly correlated with complexity or evolutionary advancement. The number of base pairs in an organism's genome does not necessarily dictate its complexity or the size of its brain.
It is true that some species of apes, such as chimpanzees and gorillas, have slightly smaller genomes (less DNA) compared to humans. However, this difference in genome size is relatively small and not a definitive factor in determining brain size or cognitive abilities.
The size of an organism's brain is influenced by multiple factors, including genetics, brain organization, and developmental processes. Brain size is not solely determined by the amount of DNA in an organism's genome. It is influenced by the regulation of gene expression, the timing of gene activation during development, and interactions between genes and the environment.
The evolution of brain size and cognitive abilities is a complex process driven by various factors, such as natural selection, environmental pressures, social complexity, and ecological niches. Humans have unique characteristics and cognitive abilities that have allowed us to develop advanced technology, culture, and language, but brain size alone is not the sole factor responsible for these traits.
In summary, genome size is just one of many factors contributing to the complexity and evolutionary development of an organism. The relationship between DNA content, brain size, and cognitive abilities is multifaceted and not as straightforward as comparing genome sizes between species.