某DNA分子中含有100个碱基对(P元素只是32P)若将该DNA分子放在只含31P的脱氧核苷酸的培养液中,让其复制两次,则子代DNA分子的相对分子质量平均比原DNA分子( ) A、减少100 B、增加150 C、减少150 D、增加100 试题答案 在线课程 考点:DNA分子的复制 专题: ...
C. increase physical activities D. record their heart rates 2.Why does Jakicic think the findings are important? A. Wearing fitness trackers hardly helps people lose weight. B. Physical activity and diet have no effect on weight loss.