Prior to staining, which of the following is employed as a fixative in light microscopy?

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#Question id: 2624

#SCPH05 I Biotechnology

What is negative regulation of lac operon

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#Question id: 2636

#SCPH28 | Zoology

Which of the following events occur when E. coli is starved for tryptophan?

I.  The ribosome translates leader peptide completely

II. Transcription reads through attenuator into trp EDCBA

III. Tryptophanyl tRNA is not formed

IV. A stem loop structure involving regions 3 and 4 is formed at attenuator site

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#Question id: 13085

#SCPH01 Biochemistry

The most common microsatellite sequence encountered in human genome is the sequence 

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#Question id: 3471

#SCPH06 I Botany

In a altruistic behavior occur between nephew and uncle, which of the following value of cost of donor and benefit of recipient respectively allowed to altruism?

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#Question id: 10543

#SCPH05 I Biotechnology

Effectors are molecules that change the plant’s structure, metabolism, or hormonal regulation to the advantage of the pathogen, which of the following is effector molecules?