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.

Which of the following will provide least specific amplification in qPCR?

TLS Online TPP Program

#Question id: 29088

#Unit 10. Ecological Principles

Following table shows the number of individuals of different species in two communities, X and Y. Use Jaccard index determine the degree of similarity between X and Y community?

TLS Online TPP Program

#Question id: 29089

#Unit 10. Ecological Principles

Following table shows the number of individuals of different species in two communities, X and Y. Use simple matching index determine the degree of similarity between X and Y community?

TLS Online TPP Program

#Question id: 29090

#Unit 10. Ecological Principles

The figure above shows the distribution of 10 plant species that grow along a regular environmental gradient, such as depth of the water table in a river valley. All other environmental factors are similar. This figure demonstrates that

TLS Online TPP Program

#Question id: 29091

#Unit 10. Ecological Principles

Increased solar energy, together with an abundance of water, results in high productivity of plants is an characteristics of____

TLS Online TPP Program

#Question id: 29092

#Unit 10. Ecological Principles

Based on the intermediate disturbance hypothesis, a community’s species diversity is increased by

TLS Online TPP Program

#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;