US STOCKS-Wall St ends down, dollar gains offset deal news optimism
* Biotech shares jump after four days of losses
* FedEx to buy Dutch peer TNT; Informatica to go private
* Canada to sell its GM stake to Goldman Sachs
* Indexes down: Dow 0.03 pct, S&P 0.2 pct, Nasdaq 0.1 pct (Updates to close)
By Caroline Valetkevitch
NEW YORK, April 7 (Reuters) - U.S. stocks ended slightly lower on Tuesday, reversing course late in the session as strength in the dollar offset optimism about deal news.
The S&P utilities sector, which helped lead gains on Monday, was the biggest drag on the S&P 500, closing down 1.1 percent.
The dollar recovered from recent losses, reaching session highs in afternoon trading. That shifted investor focus again to worries about its impact on U.S. earnings.
"If the (dollar) move is gradual it shouldn't impact stocks too much, as companies will have a chance to hedge against the impact, but a sharp rise will have an impact," said Tony Roth, chief investment officer at Wilmington Trust in Wilmington, Delaware. Continuación...