Within a trophic level, this term refers to groups of species that feed on similar resources and often have similar ways of life.

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#Question id: 19106

#Unit 8. Inheritance Biology

Assume that mating is random. First, consider an autosomal recessive disease that is usually lethal in childhood, and that has an incidence among newborns of 1/3000. What mutation rate would be required to maintain this frequency in the population? 

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#Question id: 11087

#Unit 7. System Physiology – Animal

Which of the following oxygen-hemoglobin dissociation curves corresponds to normal blood (red line) and blood containing carbon monoxide (green line)?

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#Question id: 15452

#Unit 4. Cell Communication and Cell Signaling

During  activation of B-cell, T cell delivers cytokines and other signals to its partner B cell. Which types of cytokine signals secreted by T-cells?

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#Question id: 19305

#Unit 12. Applied Biology

If 35S promoter is fused with Adh-I introns sequences ensures

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#Question id: 18971

#Unit 9. Diversity of Life Forms

The following are all true about the life cycle of mosses except