The DNA molecule here has been spread apart, opening up two single stranded DNA's which have complementary base sequences because they were double stranded DNA.

这里DNA分子被分开,形成两条单链DNA,这两条单链碱基序列互补,因为它们是由双链DNA解旋形成的

耶鲁公开课 - 生物医学工程探索课程节选

The league is promoting a season-opening double header on October 7 on Versus that will feature a pair of appealing matchups in Philadelphia-Boston and Pittsburgh-Vancouver.

FORBES: The NHL Looks to Keep its Momentum Going

Consider the new issue explosiveness of LinkedIn which after its opening day double trades around 20 times estimated 2011 revenues.

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Ross Fisher was another to begin from the 10th at Carnoustie and recorded a double bogey at his opening hole, taking 41 to cover his first nine holes.

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