Apple Inc, on trial for allegedly colluding to raise the price of e-books, said on Thursday an adverse ruling would have a "chilling effect" on how businesses investigate new markets. If Apple was found guilty, it would "send shudders through the business community" by condemning the ordinary negotiations that companies undertake to enter new markets, the company's lawyer, Orin Snyder, said on the last day of the trial. "We submit a ruling against Apple on this record sets a dangerous precedent," Snyder said. The U.S. Justice Department accuses Apple of conspiring with U.S. publishers beginning in late 2009 to increase the price of e-books in an effort to undercut the pricing established by then-dominant Amazon.com Inc. The publishers have settled with the government. Throughout closing arguments Thursday, Apple found itself fighting back against tough questioning by U.S. District Judge Denise Cote. At one point on Thursday, Cote asked if it w