\code{alpha}, and \code{theta}. This may be interesting for the last
one to model varying phenotypic optima. The exact updating formula
from Gillespie (1996) are used which are reduced to BM formula if
\code{alpha}, and \code{theta}. This may be interesting for the last
one to model varying phenotypic optima. The exact updating formula
from Gillespie (1996) are used which are reduced to BM formula if