What kind of speciation would you call this?

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#Question id: 11855

#General Aptitude

The least number which when divided by 5,6,7 and 8 leaves a reminder 3, but when divided by 9 leaves no reminder is.

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#Question id: 11852

#General Aptitude

The least number of five digits which is exactly divisible by 12,15 and 18, is :

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#Question id: 13054

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

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.

What would the expected effect be on a PCR reaction if the primers used were slightly shorter and more variable than the intended oligonucleotide sequences?

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#Question id: 14362

#Section 5: Bioprocess Engineering and Process Biotechnology

An experiment requires the use of 5 x 107 units of enzyme. The price for the enzyme is quoted for katal amounts. Allowing for a 20% excess for wastage, pipetting, and so forth, what approximate round number of katals of enzyme would you purchase? 

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#Question id: 3623

#Section 3: Genetics, Cellular and Molecular Biology

To carry out a complementation test, which of the following statement is correct?