Abstract
The data presented in the preceding paper Katayama (1964) are analysed on the basis of three types of randomness of associations: general random association, linear random association and circular random association, with the object of examining whether the data support the hypothesis of the prime number of chromosomes being 5. Although the association does not seem to be random in the sense of any one of the three types of randomness, the results of the analysis do not support the hypothesis of prime number of chromosomes being 5.
