A researcher studying bacterial toxin predicts that a lysine within the toxin is important for binding it’s target cell.  She used site-directed mutagenesis to change a codon for lysine (AAA) to one for asparagine (AAU).  However, the mutant toxin still binds to its target cell just as well as the wild-type toxin bound and appears to have no other changes. This type of mutation is probably

TLS Online TPP Program

#Question id: 23853

#Unit 13. Methods in Biology

The segment of DNA shown in Figure, has restriction sites I and II, which create restriction fragments A, B, and C. Which of the gels produced by electrophoresis shown below best represents the separation and identity of these fragments? 

TLS Online TPP Program

#Question id: 23854

#Unit 13. Methods in Biology

Which of the following procedures would produce RFLPs?

TLS Online TPP Program

#Question id: 23855

#Unit 13. Methods in Biology

Dideoxyribonucleotide chain-termination is a method of

TLS Online TPP Program

#Question id: 23856

#Unit 13. Methods in Biology

DNA microarrays have made a huge impact on genomic studies because they

TLS Online TPP Program

#Question id: 23857

#Unit 13. Methods in Biology

Which was developed by a British researcher and causes DNA sequences to be transferred to a membrane and identified with a probe?

TLS Online TPP Program

#Question id: 23858

#Unit 13. Methods in Biology

Which describes the transfer of polypeptide sequences to a membrane to analyze gene expression?