What are size of female population of butterfly (Breed once and one year life span ) after two year ?

Nt = 20 (initial population ) Nt+2 =?

Ro=1.5 number of female produced per female per generation

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#Question id: 18861

#Unit 13. Methods in Biology

Which component of the compound microscope aids in the collecting and focussing of light rays on the material to be examined?

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#Question id: 23398

#General Aptitude

There are five books A, B, C, D and E. The book C lies above D, the book E is below A and B is below E. Which is at the bottom?

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#Question id: 3658

#Unit 3. Fundamental Processes

In E. coli, the UvrABC endonuclease removes _____________and other bulky lesions by recognizing the distortion these produce in the double helix.

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#Question id: 11912

#Unit 10. Ecological Principles

The success of birds introduced to Tahiti or the Hawaiian Islands was dependent on the morphology of the species already present. If there was a small morphological difference in bill length between the resident and introduced species, then

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#Question id: 8922

#Unit 9. Diversity of Life Forms

Which statement is most consistent with the hypothesis that the Cambrian explosion was caused by the rise of predator-prey relationships?