Which of the following cell types are responsible for initiating a secondary immune response?

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#Question id: 13064

#Unit 13. Methods in Biology

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.

Which of the following techniques doesn’t involve use of a secondary antibody?

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#Question id: 23859

#Unit 13. Methods in Biology

Which uses reverse transcriptase to make cDNA followed by amplification?

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#Question id: 2330

#Unit 2. Cellular Organization

The cell theory states that

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#Question id: 12831

#General Aptitude

The area of the triangle formed by the straight line 3x + 2y = 6 and the co-ordinate axes is

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#Question id: 3388

#Unit 11. Evolution and Behavior

This graphical presentation emphasizes following important consequences of the Hardy-Weinberg principle.

 a. The frequency of heterozygous is highest when p equal to q

b. Rare alleles are found primarily in heterozygotes

c. This frequency distribution will not change from generation to generation once a population is in Hardy-Weinberg equilibrium

d. The equal distribution of genotypes when p equal to q

Which of the following is correct?