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.

A restriction enzyme cleaves a circular plasmid vector to produce fragments : 1kb, 0.3kb, 2kb, 1kb and 0.3kb. How many bands will be visible on agarose gel?

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#Question id: 20992

#Unit 12. Applied Biology

Geobacter metallireducens is the first iron-reducing bacterium isolate with anaerobic activity and capable of

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#Question id: 29093

#Unit 10. Ecological Principles

Five Hypotheses Explain How Species Richness Affects Community Services

I-Elton’s hypothesis

II-rivet hypothesis

III-Redundancy hypothesis

IV-Keystone hypothesis

V-Idiosyncratic hypothesis

a) Species that play the same roles in a community can compensate for each other if some are lost under particular conditions

b) Community services change as the number of species increases or decreases

c) there is a linear correlation between species richness and community services

d) species is an organism that helps hold the system together

e)Some species play a small but critical role in keeping the plane

Correctly match the following hypothesis with their correct  prediction;

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#Question id: 15715

#Unit 12. Applied Biology

In embryogenesis a type of structure with no vascular connection with the maternal callus tissue or explants is formed

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#Question id: 2787

#Unit 2. Cellular Organization

All the following statements are true about a nucleosome except:

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#Question id: 26810

#Unit 8. Inheritance Biology

Match the following;