9.Biotechnology Principals and Process
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एथिडियम ब्रोमाइड द्वारा रंजित डी.एन.ए. को यु वी विकिरण में अनावृत्त करने पर कैसा दिखायी देगा ?

A

चमकीला नारंगी रंग

B

चमकीला लाल रंग

C

चमकीला नीला रंग

D

चमकीला पीला रंग

(NEET-2023)

Solution

Option $(1)$ is the correct answer because in recombinant $DNA$ technology the separated $DNA$ fragments can be visualised only after staining the $DNA$ with a substance known as ethidium bromide followed by exposure to $U.V.$ radiation. You can see bright orange coloured bands of $DNA$ in an ethidium bromide stained gel exposed to $U.V.$ light.

Standard 12
Biology

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