Two barnacles, Balanus and Chthamalus, can both survive on the lower rocks just above the low-tide line on the Scottish coast, but only Balanus actually does so, with Chthamalus adopting a higher zone. Which of the following best accounts for this niche separation?

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#Question id: 293

#SCPH05 I Biotechnology

Which of the following types of bonds or interactions between lipid hydrocarbon tails is responsible for lipids forming a membrane bilayer or membranous vesicles in water

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#Question id: 13060

#SCPH06 I Botany

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

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#Question id: 5703

#SCPH06 I Botany

Robertsonian translocation is reciprocal exchange of genetic segment between two acrocentric chromosomes. Which of the following is incorrect statement?

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#Question id: 16490

#SCPH01 Biochemistry

Significance of producing transgenic plants are aimed at producing 

TLS Online TPP Program

#Question id: 14750

#SCPH05 I Biotechnology

Diauxic pattern of biomass growth is associated with

I. multiple lag phase

II. sequential utilisation of multiple substrate

III. Simultaneous utilisation of multiple substrate

IV absence of log phase