RNA molecules form double stranded helices, just as do DNA molecules, by Watson Crick pairing of nucleotides on the two complementary strands of the helix.

RNA分子能像DNA分子那样形成双链螺旋，通过沃森·克里克配对，两个螺旋的核苷链互补。

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In 1998, scientists identified RNAi, a mechanism that primitive organisms use to detect and destroy virus's double-stranded RNA and any viral mRNA.

1998年，科学家发现了RNAi，这是一种原始生物用来检测和摧毁病毒的双链rna和任何携带病毒的mRNA的机制。

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These are hula-hoop-shaped double-stranded units of DNA that can be moved easily from one cell to another.

它们是形似呼拉圈的双股dna单位，可以被轻易地从一个细胞转移到另一个细胞。

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They would naturally hybridize and form a duplex, or a double stranded nucleic acid.

它们会自然杂交并形成双螺旋,或者说双链核酸

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Certain double stranded RNA sequences will cause in the cell a process of degradation of very specific RNA sequence.

一些双链RNA序列能够在细胞中开启,特定RNA序列的降解程序

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You put this chromosomal DNA or this DNA that you're interested in, double stranded into a test tube.

你把这个染色体DNA,或者你感兴趣的双链的DNA,放进一个试管

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The HIV retrovirus, in particular, is a single-stranded RNA virus that duplicates itself in a host cell by converting its genetic code into double-stranded DNA that is then inserted into the host cell.

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DNA. This molecule is a double-stranded helix made from four different types of sub-molecule.

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One way in which this occurs is through "RNA interference", which involves the introduction of double-stranded RNA molecules.

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