Incorrect pairing of bases during bacterial DNA replication occurs about once every 10^5 to 10^6 nucleotides, but the spontaneous mutation rate is only one error in 10^9 base pairs. What accounts for the difference?

TLS Online TPP Program

#Question id: 3960

#Unit 3. Fundamental Processes

When all or a piece of a chromosome becomes attached to another chromosome, the aberration is called a(n):

TLS Online TPP Program

#Question id: 1395

#Unit 4. Cell Communication and Cell Signaling

Which of the following mutations would promote malignancy in cells whose proliferation is inhibited by TGFβ?

a. overexpression of Smad2               

b. loss of Smad 4

c. overexpression of TGFβ receptor I

d. loss of TGFβ receptor II

TLS Online TPP Program

#Question id: 13078

#Unit 13. Methods in Biology

RFLPs have several unique advantages except this one;

TLS Online TPP Program

#Question id: 4167

#Unit 3. Fundamental Processes

Which statement is false concerning ribosomes and their components?

TLS Online TPP Program

#Question id: 817

#Unit 1. Molecules and their Interaction Relevant to Biology

The aggregation of nonpolar side chains in the interior of a protein is favored by