1. The best use of a molecular probe would be to _ isolate bacterial genes wild-

Question

1. The best use of a molecular probe would be to _

isolate bacterial genes wild-type repressor t repressor (unable to bind to the operator) ls t repressor (insensitive to lactose) o+ wild-type operator OC constitutive operator (insensitive to repressor) P+ wild-type promoter P mutant promoter Will a bacterial cell with the following partial hybrid DNA constitution produce any Beta-galactosidase, first in the presence of lactose sugar, and then in the absence of lactose sugar? (he first part below before the slash is the chromosome and the second part after the slash is the plasmid; F' plasmid DNA. O No, no O Yes, no o Not possible to determine O Yes, yes O No, yes

Explanation / Answer

Molecular probes are small DNA or RNA segment that recognise complementry sequence in DNA or RNA that allow identification & isolation or specific sequence in an organism.so molecular probes are use to find a specific nucleotide sequence.

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