32 有一雙股DNA其Tm(melting temperature)值為93.9℃,試求其密度為下列何者?[(Tm=69.3°C+0.41°C×%(G+C): P=1.66+0.00098×%(G+C)](A)1.7188 (B)1.6388 (C)1.6688 (D)1.6988