According to the Khasi matrilineal system, Sing's sister's son, not his own, will inherit his title.

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The Mosuo society in China, is both matriarchal and matrilineal and marriage in the traditional sense do not exist.

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However, few other matrilineal splits from the first 100, 000 years of the species's history have survived to the present day.

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Conservative Judaism has stuck with the traditional, matrilineal criterion.

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The team needed to find matrilineal relatives.

CNN: February 4, 2013 -- Updated 1805 GMT (0205 HKT)