A Japanese strain of mice has a peculiar, uncoordinated gait called waltzing, which is due to a recessive allele, v. The dominant allele V causes mice to move in a coordinated manner. A mouse geneticist has recently isolated another recessive mutation that causes uncoordinated movement. This mutation, called tango, could be an allele of the waltzing gene, or it could be a mutation in an entirely different gene. Propose a test to determine whether the waltzing and tango mutations are alleles, and if they are, propose symbols to denote them.