A 1000 bp B DNA is converted into Z form

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#Question id: 23563

#Unit 13. Methods in Biology

________ is the direct uptake of foreign DNA by a host cell.

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#Question id: 13065

#Unit 13. Methods in Biology

Precision will be reduced, but yield will be increased

Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.

Agglutination of antigens by utilising specific antibodies can only occur, if

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#Question id: 19043

#Unit 13. Methods in Biology

Ion exchange chromatography is based on? 

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#Question id: 28658

#Unit 2. Cellular Organization

Which of the following subunits of cohesin interact with the ATPase domains, which together form a cohesin ring structure?

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#Question id: 2405

#Unit 2. Cellular Organization

At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?