It is in keeping with varna dharma that sons are expected to...

It is in keeping with varna dharma that sons are expected to follow the occupation of their father, as that is the occupation that was chosen prior to birth. --jati: "Birth; position assigned by birth; rank, caste, family, race, lineage." Jati, more than varna, is the specific determinant of one's social community. Traditionally, because of rules of purity each jati is excluded from social interaction with the others, especially from interdining and intermarriage.