During mitosis, the breakdown of the nuclear envelope depends on the:

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#Question id: 2063

#Section 3: Genetics, Cellular and Molecular Biology

In what way do the membranes of a eukaryotic cell vary?

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#Question id: 544

#Section 2: General Biology

One of the enzymes involved in glycolysis, aldolase, requires Zn2+ for catalysis. Under conditions of zinc deficiency, when the enzyme may lack zinc, it would be referred to as the:

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#Question id: 18638

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

For unrooted trees, the number of unrooted tree topologies (NU) is ________

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#Question id: 3636

#Section 3: Genetics, Cellular and Molecular Biology

A man with type A blood group marries a woman with type A blood group. Their first child has type O blood. What is the genotype of the Man, proportion of his gametes are expected to contain the IA allele, and probability that their next child will have type A blood respectively:

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#Question id: 13060

#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.

In blue white screening insertional activation of Beta-D-galactosidase will give rise to