Moreover, not only Fs but also Ds are frowned on, and grades are regularly inflated to achieve C averages. |
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Crosses were done between transgenic plants carrying pShortDs and plants containing transposase to analyze the ends of extrachromosomal linear Ds elements. |
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Circular extrachromosomal Ac and Ds molecules have been described previously, although their origin and possible relation to the circular molecules discussed here is unclear. |
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