His theory accounts for biological inheritance through particulate factors (now known as genes) inherited one from each parent, which do not mix or blend but segregate in the formation of the sex cells, or gametes.
Although Muslim, the Minangkabau are matrilineal, tracing descent and inheritance through the female line.
"Twins are leveraging their genetic inheritance through a shared experience," said Richard D. Arvey, a professor at the Carlson School of Management at the University of Minnesota (set, incidentally, in the Twin Cities of Minneapolis-St. Paul).
One describes how the Kongo tribe of central Africa abandoned matrilineal inheritance through contact with Portuguese slavers: an increased demand for labour to hunt for slaves led Kongolese men to start claiming their children.
In 1994, as was widely reported, a group of Averell Harriman's heirs, including Mrs. Mortimer, sued Pamela Harriman and several associates, charging that they had squandered tens of millions of dollars of their inheritance through high-risk investments.
By inheritance through his mother (King Henry I's daughter, Matilda), he became duke of Normandy in 1150; he succeeded his father as count of Anjou, Maine, and Touraine in 1151; and in 1152, by marrying Eleanor of Aquitaine, he acquired that duchy, together with Gascony, Poitou, and Auvergne.
