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If undefined sequences are immobilized, the set up is called ____________

(a) Blot

(b) Microarray

(c) Plate

(d) DNA chip

I got this question in an interview for internship.

I'd like to ask this question from Gel electrophoresis, Oligonucleotide  & Microarrays topic in portion Basics of Genetic Engineering of Genetic Engineering

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Right answer is (d) DNA chip

To explain: In the case, undefined sequences are immobilized; the set up is called a DNA chip. They can be used by synthesis of oligonucleotides in situ using photolithography technology from the microelectronics industry.

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