(FORTUNE Magazine) – COLUMBIA, MO. -- A Boone County judge has ruled ((that)) Missouri's abortion law doesn't add nine months to a person's age. ((The ruling means that)) a 20- year-old man will lose his driver's license for drinking under the legal age. Associate Circuit Judge Larry Bryson . . . rejected a motion filed . . . by . . . Bryan Rosner's defense attorney . . . Police stopped Rosner's car June 7 in Columbia and he was . . . found guilty of driving while intoxicated and possession of alcohol by a minor. Missouri's legal drinking age is 21. ((The defense)) motion contended that under the Missouri abortion law, upheld by the U.S. Supreme Court, Rosner became 21 ''on or about Dec. 30, 1988.'' The law states life begins at conception. Rosner was born Sept. 30, 1968. -- From a UPI dispatch.