In Wright v. Wright, 281 N.C. 159, 188 S.E.2d 317 (1972), the North Carolina Supreme Court permitted the introduction of blood-grouping tests to prove that a man could not be the father of a child when a question of paternity arose in a civil action. In Wright, the Supreme Court noted that a blood test can rebut the presumption of paternity which attaches when a child is born during a marriage: Although we continue to recognize its primary importance in preserving the status of legitimacy of children born in wedlock, this presumption must give way before dependable evidence to the contrary. Blood-grouping tests which show that a man cannot be the father of a child are perhaps the most dependable evidence we have known. Id. at 172, 188 S.E.2d at 325-26 The presumption of paternity is rebuttable because a man will not be required to support a child not his own; conversely, "the father of an illegitimate child has a legal duty to support his child." Wright v. Gann, 27 N.C. App. 45, 47, 217 S.E.2d 761, 763 (1975) (citing G.S. 49-2), cert. denied, 288 N.C. 513, 219 S.E.2d 348 (1975).