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What is the short DNA sequence that reads meaningfully the same in both directions called?

Answer and explanation

Correct answer: Palindromic sequence

The governing concept is a palindromic DNA sequence. In molecular biology, a DNA sequence is called palindromic when the sequence read in the 5′ to 3′ direction on one strand corresponds to the sequence read in the 5′ to 3′ direction on the complementary strand. For example, GAATTC has that property because its complementary strand is CTTAAG, which reads GAATTC in the opposite strand direction. Therefore option D is correct. Many restriction enzymes recognize such sequences. A promoter regulates transcription, a codon specifies an amino acid or stop signal in translation, and a terminator ends transcription; none of these terms necessarily means a two-way symmetrical recognition sequence.

Related tags

Palindromic-SequenceRecognition-SiteRestriction-EnzymesBiotechnologyRestriction EnzymesPrinciples Of BiotechnologyClass 11 Mcq

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