If the experimental population of E. coli lacks an F factor or F plasmid, and if bacteriophage are excluded from the bacterial cultures, then which of these is a means by which beneficial mutations might be transmitted horizontally to other E. coli cells?

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#Question id: 4302

#Part-A Aptitude & General Biotechnology

Which one of the following proteins is involved in promoter recognition in eukaryotes?

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#Question id: 4303

#Part-A Aptitude & General Biotechnology

Which component is not directly involved in translation?

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#Question id: 4304

#Part-A Aptitude & General Biotechnology

Using codon table, identify a 5′ → 3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys.

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#Question id: 4305

#Part-A Aptitude & General Biotechnology

Which of the following molecules is a protein produced by a regulatory gene?

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#Question id: 4306

#Part-A Aptitude & General Biotechnology

Which of the following molecules helps to "turn off" genes in a cell?

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#Question id: 4307

#Part-A Aptitude & General Biotechnology

When taken up by a cell, which of the following molecules binds to a repressor so that the repressor no longer binds to the operator?