Which of the following are the characteristics of prokaryotic operator O1

a. Made up of 21-bp sequence 

b. It has twofold/dyad symmetry 

c. Recognized by two subunits of Lac repressor

d. On each O1 four unit of Lac repressor binds

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#Question id: 9613

#Unit 9. Diversity of Life Forms

Which of the following pairs are the best examples of homologous structures?

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#Question id: 9220

#Unit 9. Diversity of Life Forms

Which of the following factors could cause the largest increase in the effective population size of a species?

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#Question id: 13173

#Unit 10. Ecological Principles

Landscape ecology is best described as the study of

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#Question id: 11914

#Unit 10. Ecological Principles

Alder trees, which harbour nitrogen-fixing bacteria in their roots, provide nitrogen to soils developing on sandbars rivers, this is an example of,

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#Question id: 16964

#Unit 11. Evolution and Behavior

Which statements is not true for Conservative characters