Obtaining finite populations in a Verhulst-free 8-bit Penna model with periodic change in reproduction


Proceedings of the 27th Samahang Pisika ng Pilipinas Physics Congress, Development Academy of the Philippines Convention Center, Tagaytay City, 28–30 Oct 2009, SPP-2009-033.


Periodic changes in reproduction age slow down population growth or decay. The minimum reproductive age in an 8-bit, Verhulst-free Penna model varied repeatedly between two values. It is an invariable characteristic of an individual which is set at birth. A steady state is found when the period for the smaller reproductive age is slightly longer.