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List at least 3 components that a particular sequence of DNA must have in order to...

List at least 3 components that a particular sequence of DNA must have in order to be called putative gene.
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A putative gene is the segment of the DNA whose protein product and its function are not known. The putative gene can be identified by an open reading frame (ORF). An ORF is a coding region of protein. It contains an initiation codon ATG (AUG in case of RNA); termination codons like TAA, TGA and TAG. The putative gene may contains atleast 6 reading frames of which three are oriented in one direction and other three in reverse direction.

A double stranded DNA segment with 6 reading frames.

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