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If the library to be screened and the host belongs to different species, then it is called as ___________

(a) homologous selection

(b) heterologous selection

(c) intraspecies selection

(d) mixed selection

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Enquiry is from Screening by Expression In Vivo topic in division Screening Libraries of Genetic Engineering

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Correct choice is (b) heterologous selection

Explanation: If the library to be screened and the host belong to different species, then it is called as heterologous selection. In this case, there are chances that protein is expressed but it is non functional.

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