The cortical reaction of sea urchin eggs functions directly in ________.

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#Question id: 15441

#Unit 4. Cell Communication and Cell Signaling

In hermaphrodites, expression of the egl-1 gene in the neurons is repressed by the transcription factor, and deletion of that causes these neurons to undergo apoptosis;

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#Question id: 9215

#Unit 9. Diversity of Life Forms

Use the following figure to answer the question

Five new individuals were added to a small population of bighorn sheep in 1986, and ten more were added between 1990 and 1994. According to the figure, what occurred in this population after these additions?

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#Question id: 13056

#Unit 13. Methods in Biology

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 is true for traditional and real time PCR?

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#Question id: 27001

#Unit 10. Ecological Principles

Triangular shape population pyramid represents,

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#Question id: 3445

#Unit 11. Evolution and Behavior

Which one of these concepts is not associated with sociobiology?