Karan remembers that his sister's birthday is not   after 18th August. Karan's mother remembers that Karan's sister birthday is before 20th August but after 17th August. On which date of August is Karan's sister birthday

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#Question id: 1452

#Unit 4. Cell Communication and Cell Signaling

Which of the following proteins belong to the control system that regulates cells past a certain point in late G1 (START)?

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#Question id: 12118

#Unit 10. Ecological Principles

According to Hamilton’s rule,

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#Question id: 16127

#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.

The GLN1 gene shows a rather complex regulation in response to different amino acids. When either glutamate (glu) or glutamine (gln) is added to the medium, the amount of GS expression diminished and when both glutamate and glutamine are added to the medium GS expression is shut off completely. The effects of different mutants on the response to glu and gln are shown below.

Which of the models from best fits these experimental results? Complete the model for the regulation of GLN1 that includes the effects of glu and gln.      

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#Question id: 29528

#Unit 6. System Physiology – Plant

JA initiates biosynthesis of defense proteins as

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#Question id: 4442

#Unit 3. Fundamental Processes

The bacterial RNA polymerase is closely related to the eukaryotic polymerases pecifically, the two large subunits ,b and b’ , are homologous to the