Depending on the Ti plasmid, the length of the T-DNA region can vary from approximately 

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#Question id: 16126

#SCPH06 I Botany

2 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, that could explain the effect of the gln2– and gln3– mutations on the regulation of GLN1.

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.

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#Question id: 1294

#SCPH28 | Zoology

Dystroglycan is a large glycoprotein that binds to dystrophin in muscle cells.  It is also present in other cells and can also bind to:

a.  laminin.

b.  the virus that causes Lassa fever.

c.  the bacterium that causes leprosy.

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#Question id: 1615

#SCPH28 | Zoology

Which of the following statements is TRUE of C3b?

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#Question id: 11268

#SCPH06 I Botany

Consumption efficiency (CE) is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level but Assimilation efficiencies (AE) is the proportion of ingested energy that is assimilated into the bloodstream. Which of the Following statement is correct?

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#Question id: 4723

#SCPH01 Biochemistry

The most common cause of the pleiotropic effect of gene is due to