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TLS Online TPP Program

#Question id: 6970

Neural crest cells will become:

#Unit 5. Developmental Biology
  1. neurons in the sympathetic ganglia of the autonomic nervous system
  2. neurons in the dorsal root ganglia of the peripheral nervous system
  3. pigment cells in the dermis
  4. all of the above are derived from neural crest cells
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TLS Online TPP Program

#Question id: 1420

#Unit 4. Cell Communication and Cell Signaling

Examination of a cell’s structure reveals condensed chromatin, a shrunken cytoplasm, but unfragmented DNA and a lack of blebbing. If this cell has been triggered to undergo apoptosis by an extrinsic factor, which of the following events has NOT likely happened yet?
TLS Online TPP Program

#Question id: 1412

#Unit 4. Cell Communication and Cell Signaling

Which technique is the best for identifying which genes are upregulated and which are downregulated when cancer cells in culture are treated with taxol?
TLS Online TPP Program

#Question id: 812

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is not known to be involved in the process of assisted folding of proteins?
TLS Online TPP Program

#Question id: 18082

#Unit 8. Inheritance Biology

The interaction of selection and inbreeding in determining the incidence of autosomal recessive diseases. Consider a gene in which recessive mutations occur at a rate of 10-5. Assume a selective disadvantage S of 0.4 in homozygotes for the recessive allele. Now assume that, for thousands of generations, 10% of all children have been products of first-cousin matings (the remaining 90% being products of random matings). Calculate the steady-state value of q. Also calculate the incidence of the disease at steady state. 
TLS Online TPP Program

#Question id: 5228

#Unit 11. Evolution and Behavior

Multigene families are