Which of the following mutations might confer a competitive advantage to an athlete by raising his or her hematocrit?

a. excess production of erythropoietin                       

b. decreased production of erythropoietin

c. EpoR that cannot bind STAT5                  

d. EpoR that cannot bind SHP1

e. EpoR that cannot bind JAK2

TLS Online TPP Program

#Question id: 5068

#Unit 5. Developmental Biology

In TGF-b signaling, the transcription factors downstream from the TGF-β receptors. These transcription factors in Drosophila and the related vertebrate proteins are called:

TLS Online TPP Program

#Question id: 4701

#Unit 11. Evolution and Behavior

Charles Darwin discussed all of the following EXCEPT:

TLS Online TPP Program

#Question id: 4689

#Unit 3. Fundamental Processes

Cleavage liberates precursors of rRNAs and tRNA Cleavage at the points that is carried out by the enzymes excepts

TLS Online TPP Program

#Question id: 24156

#General Aptitude

Read the following paragraphs and carefully determine what the main idea is for each. The best way to approach these questions is to first read the paragraph and then, in your own words, restate what you think the author is trying to say. From the five choices, select the one statement that best supports the author’s point.

The best recipes for clam chowder all include onions and a bay leaf. The onions add a sharpness and zest to the blandness of the clams, and also help remove their slimy texture. The bay leaf complements the onion’s strong flavor.

This paragraph best supports the statement that

TLS Online TPP Program

#Question id: 24115

#General Aptitude

Excited about winning the award, Marcia walked up to the podium and delivered an animated acceptance speech.