The karyotype of Myotis levis dinellii (2n = 44, fundamental number
50) is composed of three pairs of large metacentric elements characteristic of the genus (Bickham 1979; Reina et al.
In this proposal, we outline three lines of research concerning fundamental number
theoretical problems that have baffled mathematicians for decades.
In such cases, fundamental number
may be a more biologically relevant measure of variance than diploid number.
Furthermore, karyotypes of certain species show geographical variation in the fundamental number
of chromosomes as well as the diploid number of chromosomes as in the Genera Nannospalax and Meriones (5-7).