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TLS Online TPP Program

#Question id: 8904

Terry takes the body of the snakelike organism and slices it open along its dorsal side. If it is a hagfish, what should Terry see?

#Unit 9. Diversity of Life Forms
  1. a well-developed series of bony vertebrae surrounding the spinal cord
  2. a well-developed series of cartilaginous vertebrae surrounding the spinal cord
  3. a tube of cartilage (surrounding the notochord) with dorsal projections on both sides of the spinal cord
  4. a notochord, located underneath the spinal cord.
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TLS Online TPP Program

#Question id: 18899

#Unit 13. Methods in Biology

Cobalt-57 is a radioactive element  Used as a tracer to diagnose 
TLS Online TPP Program

#Question id: 11220

#Unit 7. System Physiology – Animal

The botulinum toxin, which causes botulism, reduces the synaptic release of ________.
TLS Online TPP Program

#Question id: 15386

#Unit 8. Inheritance Biology

You set up a mapping cross involving your favorite gene (YFG) in Neurospora and determine the following octad types: 4:4 arrangement 83; 2:4:2 arrangement 7; 2:2:2:2 arrangement 10. What is the distance between your gene and the centromere?
TLS Online TPP Program

#Question id: 12244

#Unit 10. Ecological Principles

 The amount of genotypic variation in a natural population can be increased by all of the following EXCEPT 
TLS Online TPP Program

#Question id: 8850

#Unit 9. Diversity of Life Forms

Whatever its ultimate cause(s), the Cambrian explosion is a prime example of