staidéar ar theaghlaigh agus rianú a gcuid líneálacha agus staire From Wikipedia, the free encyclopedia
San antraipeolaíocht, rianú sinsearacht duine, de réir an tsleachta fhireann (athairlíneach), an tsleachta bhaineann (máthairlíneach), nó an dá thaobh. Déantar ginealach a rianú de ghnáth chun oidhreacht a rialú is cearta grúpaí a shainmhíniú. Tugtar clann ar ghrúpa leis an nginealach céanna.[1]
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