By Deborah Levine
NEW YORK (MarketWatch) -- Treasury prices rose Tuesday and the dollar extended gains from the prior session after Greece's surprise decision to call a referendum on its bailout package stirred new fears that it could default. The vote could mean more uncertainty until December or January and "if Greece says no to the austerity then the future in the euro ... is in doubt and the whole deal just agreed to would be moot," said bond strategists at CRT Capital Group. Yields on 10-year notes 10_YEAR -3.83% , which move inversely to prices, fell 8 basis points to 2.03%. The dollar index DXY +1.10% , which measures the greenback against a basket of six major currencies, rose to 77.375, from 76.243 in North American trade late Monday. The euro EURUSD -1.27% fell to $1.3679, from $1.3908 Monday.
