The lag phase of the bacterial growth curve is marked by

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#Question id: 16130

#Unit 13. Methods in Biology

You are studying regulation of the yeast enzyme glutamine synthetase (GS), which is encoded by the GLN1 gene. You have isolated two mutants, designated gln2– and gln3–, that give decreased GS activity. Mating of either gln2– or gln3– haploids to wild type produces heterozygous diploids that show normal amounts of GS expression. When you cross either a gln2– or gln3– haploid to a gln1– strain the resulting diploids show normal expression of GS.              

How many units of ß-galactiosidase would you expect to be expressed from deletion 1 in a gln2– mutant? 

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#Question id: 26571

#Unit 3. Fundamental Processes

Which of the following is required to initiate modifications of histone H3 (deacetylation of K9 and K14, followed by methylation of K9) in human

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#Question id: 5411

#General Aptitude

The mark of a student was wrongly entered as 87 instead of 70. Due to that the average marks for the class got increased by half. The numbers of students in the class is:

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#Question id: 18861

#Unit 13. Methods in Biology

Which component of the compound microscope aids in the collecting and focussing of light rays on the material to be examined?

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#Question id: 5113

#Unit 5. Developmental Biology

The adult stem cell is housed in and controlled by its own adult stem cell niche. Which one of the following process not occur in niche?