Hereditary social class (5)
I believe the answer is:
caste
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hereditary social class</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for caste that I've seen before include "Social station" , "Social order" , "Level in society" , "Persons with class" , "Social class or rank" .)