40% pure orc
15% mother
15 % father
16% (4% for each) grandparent
8% (1% for each great)
6% (.7% for each) potential race
If great orc is in the geneaology,
32% pure orc
12% mother
12% father
12.8% (3.2% for each) grandparent
6.4% (.8% for each great)
5% (.56% for each) potential race
19.8% Great Orc