This site describes the results of my research on the polytene chromosomes of Phaseolus coccineus (bean).
It contatins detailed protocols of chromosome preparation, descriptions of the morphology of the euchromatic
and heterochrmatic regions including the nucleolus organizing region (NOR). The section karyotype contains a
complete karyogramm and ideogramm as well as chraracterization with fotos of of each polytene chromosome chromosome.



