Which statements explain the most likely cause of the difference between the hands of chimpanzees and those of gorillas? Circle the three correct answers. A A single nucleotide base in the enhancer sequence changed, which caused an activator protein to bind to the enhancer sequence. B. Several individual chimpanzees all developed the same mutation at the same time, which caused them to grip branches better C Chimpanzees used their hands for climbing more than gorillas did, so their DNA mutated to disable enhancers and caused their hands to develop differently from those of gorillas D. The exchange of pieces of DNA between alleles during sexual reproduction caused new combinations of DNA to form. An individual had a genetic mutation that resulted in a hand structure with a selective advantage that was passed on to offspring Mutations in the enhancer sequences in chimpanzees resulted in the production of new activator proteins.