Department of Mathematics, Jhargram Raj College, P.O. Jhargram, Dt. Midnapore, West Bengal, India.
In respect of some sex-linked diseases, a chain of a population can be classified into some states. In this paper, the mean and variance of the number of generations needed to go from the ith state to the jth state is calculated. Also, the number of generations that the process is in the jth state in the first n generations is given.
