The relative distances in the two maps also generally conform . This conformity between the link- age groups inferred from breeding experiments and the chromosomes observed directly under the microscope is good evidence in favour of the chromosome theory of heredity . यदि आनुवंशिक परिवर्तनों के माध्यम से आनुवंशिकता पर नियंत्रण करना हो ता आनुवंशिकता की कार्यविधि उचित रूप से समझ लेना आवश्यक है .