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TLS Online TPP Program

#Question id: 11284

Which of the following could qualify as a top-down control on a grassland community?

#Unit 10. Ecological Principles

  1. limitation of plant biomass by rainfall amount

  2. influence of temperature on competition among plants
  3. influence of soil nutrients on the abundance of grasses versus wildflowers
  4. effect of grazing intensity by bison on plant species diversity
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TLS Online TPP Program

#Question id: 19362

#Unit 13. Methods in Biology

What is the size of fragments that can be obtained by using a phagemid vector?
TLS Online TPP Program

#Question id: 19363

#Unit 13. Methods in Biology

What is the size limit for in vitro packaging of an unmodified lambda vector?
TLS Online TPP Program

#Question id: 19364

#Unit 13. Methods in Biology

Which non-essential region of the lambda phage can be deleted without impairing viability?
TLS Online TPP Program

#Question id: 19365

#Unit 13. Methods in Biology

Which vectors carry the longest foreign DNA fragments?
TLS Online TPP Program

#Question id: 19366

#Unit 13. Methods in Biology

Which of the following is site specific recombination?
TLS Online TPP Program

#Question id: 19788

#Unit 13. Methods in Biology

Thermal modulation are used in PCR for the function of__