An over-the-counter DNA paternity test now offers unknowing families peace of mind - in every state but New York. Identigene, a Salt Lake City-based genetics company, released an at-home paternity test this month, giving mothers and their offspring a speedy answer to a difficult question. Unsure mothers swab the inside of their child's mouth - and the mouth of the suspected father - then send the swabs to Salt Lake City for testing. Three to five days later, customers can log on to a secure Web site to view the results. Identigene discards the DNA after six months, but keeps...