Purified DNA ultimately precipitate out after the addition of chilled ethanol. This DNA that separate out can be removed by _____________.

Electrophoresis

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Downstream processing

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PCR

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Spooling

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Solution

The correct option is D Spooling
Answer is option D i.e. "Spooling"
At the last step of DNA extraction, purified DNA precipitates out after the addition of chilled ethanol. This DNA appears as collection of fine threads in the suspension which can be spool over the glass rod, this method is called as DNA spooling.

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