### From OpenWetWare

## Notes on population genetics

Let *n*_{i}(*t*) be the number of organisms of type *i* at time *t*, and let *R* be the per-capita reproductive rate per generation. If *t* counts generations, then
*n*_{i}(*t* + 1) = *n*_{i}(*t*)*R* and
*n*_{i}(*t*) = *n*_{i}(0)*R*^{t}