Descent, heredity (7)
I believe the answer is:
lineage
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">descent</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know this)</span><br/ ><br/ >'<span class="explanation-format__original">heredity</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that lineage is a type of hereditary pattern)</span><br/ ><br/ ></span>
(Other definitions for lineage that I've seen before include "Ancestral line as seen in eagle" , "Descent from ancestors" , "Pedigree, family tree" , "Descent (from an ancestor)" , "Direct descent" .)