Small differences in genotype can spell big differences phenotype.
“<>”Chimp and human genomes are very similar and encode very similar proteins. The DNA sequence that can be directly compared between the two genomes is almost 99 percent identical. When DNA insertions and deletions are taken into account, humans and chimps still share 96 percent of their sequence.”<>”
Which means that 4% difference is crucially important. It differentiates a conscious, thinking, organizing being capable of adapting the world to his needs from an instinctive animal that is a slave of his environment.
Small differences in genotype can spell big differences phenotype.