A replicating prokaryotic chromosome has _________ replication forks, and a replicating eukaryotic chromosome has ___________.

#Question id: 1232

#Unit 4. Cell Communication and Cell Signaling

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

#Question id: 2897

#Unit 2. Cellular Organization

The transcription of most protein coding genes in mammals (~70 percent) occurs at a lower rate than at TATA box–containing and initiator-containing promoters and begins at any of several alternative start sites within regions of about 100–1000 bp that have an unusually high frequency of CG sequences. Which one of the following best explains it?

#Question id: 11717

#Unit 6. System Physiology – Plant

Inhibitors of the third stage of the gibberellin biosynthetic pathway is___

#Question id: 13169

#Unit 10. Ecological Principles

#Question id: 11360

#Unit 10. Ecological Principles

Which of the following can contribute to the numerical response of a predator?