A researcher would like to map the location of galE and trpA genes in a new species of bacterium that appears to be closely related to E. coli. He decides to use cotransduction, and generatesnappropriate donor and recipient strains. He is disappointed when cotransduction is not seen in his experiement. What is the most reasonable explanation for this situation?

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#Question id: 12336

#Unit 10. Ecological Principles

Which of the following statements about ecology is incorrect?

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#Question id: 10702

#Unit 10. Ecological Principles

Species A has a large effect on community because of its abundance in community known as

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#Question id: 4894

#Unit 8. Inheritance Biology

Following is figure showing restriction site on coding gene. Which of the following is mode of inheritance?

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#Question id: 4709

#Unit 11. Evolution and Behavior

 The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V-Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.

 In Darwin's tree of life, each fork in the tree represents ________.

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#Question id: 15487

#Unit 12. Applied Biology

Strains utilized for glutamate overproducers such as Cornybacterium are natural