The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to

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#Question id: 4054

#Unit 3. Fundamental Processes

Phosphorylation of RNA Pol II results in the formation

TLS Online TPP Program

#Question id: 24639

#Unit 2. Cellular Organization

The eukaryotic type II topoisomerases are homologous to

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#Question id: 5285

#Unit 8. Inheritance Biology

A transformation experiment is carried out using donor DNA that is A+B+C+ and a recipient that is A-B- C-. A+ transformants are selected and tested further. Of these, 64% are B+ and none are C+. Also, B+ are selected, and 8% are also C+. What is the gene order

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#Question id: 18911

#Unit 13. Methods in Biology

All vectors used for propagation of DNA inserts in a suitable host are called………….. But when a vector is designed for the expression of, i.e., production of the protein specified by, the DNA insert, it is termed as ………..

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#Question id: 4399

#Unit 3. Fundamental Processes

Transcription factors can

a. exhibit cooperative binding.  b. exist as heterodimers.

c. act to repress transcription of transcription factor genes.

d. undergo conformational changes which alter activity.

e. never interact with co-repressors.