A research team at Celera Genomics reported in the journal Science that comparing mouse chromosomes with human chromosomes, they found that they have 95% similarity in terms of genes, gene content, and DNA sequence. There is not much difference between mice and humans. What assumption does the above conclusion rely on? ['The genetic maps of animals that have been drawn are often inaccurate.', 'From the perspective of intelligence and emotion, there are huge differences between mice and humans.', 'The main criterion for judging the difference between substances is the genetic similarity of the species.', 'Rats have little intelligence and can be ignored when compared with humans.']