"Complex inheritance" refers to a situation in which something is passed down or inherited from one person or thing to another, but it involves various factors or aspects that make it more complicated or difficult to understand. Full definition
The best thing breeders can do when one of their dogs has produced a disease with complex inheritance, is not to breed it to mates that have family history for that disease. (ashgi.org)
Where there is a mixture of beneficiaries entitled to a share of the estate this can involve complex inheritance tax calculations. (mooreblatch.com)
And with the prevalence of hunters and shotguns, lethal farm tools, property disputes and France's complex inheritance laws, there is no shortage of means or motives. (bookpage.com)