gdata package for genetics

Hi,

I try to install genetics_1.1.1.tar.gz and get following errors. it looks for a package call 'gdata'. I looked and search r-project web, did not find any thing

R CMD INSTALL src/contrib/genetics_1.1.1.tar.gz

* Installing *source* package 'genetics' ...
** R
** data
** inst
** preparing package for lazy loading
Error in loadNamespace(i[[1]], c(lib.loc, .libPaths()), keep.source) :
        There is no package called 'gdata'
Execution halted
ERROR: lazy loading failed for package 'genetics'
** Removing '/usr/local/lib/R/library/genetics'
** Restoring previous '/usr/local/lib/R/library/genetics'

Can you help me out this?

Yuandan