Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?

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#Question id: 947

#SCPH05 I Biotechnology

 Which is not part of the synthesis reactions for histidine?

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#Question id: 15621

#SCPH01 Biochemistry

Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition Lac– strain, called lac3–, is linked to the Tn5 insertion. From a strain carrying the Tn5 insertion and lac3– mutation you isolate an F’ that caries a region of the chromosome that includes both Tn5 and the linked Lac region. Introduce this F’ into an F– strain carrying lac1– by selecting for Kanr. These merodiploids express ß-galactosidase normally. If the merodiploid were Lac–, 

a) the two mutations lie in the different gene.

b) Both mutation are complement each other

c) the two mutations lie in the same gene.

d) Both of the mutations is dominant to wild type.

what could you conclude about the relationship between the lac3– and lac1– mutations from  these statements?

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#Question id: 3269

#SCPH28 | Zoology

Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of

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#Question id: 2322

#SCPH06 I Botany

The gelatinous fluid inside the nucleus is called

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#Question id: 15185

#SCPH28 | Zoology

Phenomenon of Smiling Effect is largely applicable in

A. Gel Electrophoresis

B. PAGE

C. Free Solution

D. Capillary