Insertional inactivation of the lacZ gene on a plasmid can be used to screen for recombinants on a plate containing:

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#Question id: 27339

#XL - T Zoology

The number of base pair in a single turn of B-form DNA about the axis of the molecule is_____?

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#Question id: 5256

#XL - S Microbiology

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: 19950

#XL - P Chemistry

Atoms may be regarded as comprising of protons, electrons and neutrons. If the mass attributed to the neutrons were halved and that attributed to electrons were doubled then atomic mass of would

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#Question id: 31

#XL - Q Biochemistry

Which of the following is the pair of enantiomers from the following substance? 

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#Question id: 17197

#XL - T Zoology

If a person does not find ways to manage stress levels at this stage, they are at risk of developing stress-related health conditions. This stage is known as: