To estimate the number of foxes in an area, a researcher conducted a mark-recapture survey. In the first survey, he caught and marked N number of foxes. In his second survey a week later, he caught 120 foxes of which 90 were unmarked (recaptures). If you are told that the actual number of foxes in this area is 400, what is value of N in this area?

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#Question id: 7074

#Unit 5. Developmental Biology

The left-right axis decided by the paracrine factor ____a___ and the transcription factor___b_____ expressed in ____c_____ side.

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#Question id: 11717

#Unit 6. System Physiology – Plant

Inhibitors of the third stage of the gibberellin biosynthetic pathway is___

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#Question id: 11639

#Unit 9. Diversity of Life Forms

You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile, using many short extensions of the cytoplasm, each featuring the 9+2

filament pattern. It has well-developed organelles and three nuclei, one large and two small. This organism is most likely to be a member of which group?

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#Question id: 29452

#Unit 6. System Physiology – Plant

Auxins in biological samples can be determined by

a. bioassay

b. mass spectrometry

c. enzyme-linked immunosorbent assay 

d. The Avena coleoptile curvature assay

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#Question id: 12112

#Unit 10. Ecological Principles

The presence of altruistic behaviour is most likely due to kin selection, a theory maintaining that