Part of a cell containing chromosomes (7)
I believe the answer is:
nucleus
(Other definitions for nucleus that I've seen before include "Tiny factor" , "basis for development" , "Centre of growth" , "centrepiece?" , "Centre of an atom" .)
I believe the answer is:
nucleus
(Other definitions for nucleus that I've seen before include "Tiny factor" , "basis for development" , "Centre of growth" , "centrepiece?" , "Centre of an atom" .)