There is hereditary preference, certainly. If a man is born in a brahmin family, that is also stated in the Bhagavad-gita but by the contamination of Kali-yuga, all higher-class families, they have been contaminated: Revision history
Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.