#Question id: 5754
#Unit 8. Inheritance Biology
A cell is exposed to EMS (a mutagen that causes guanine to mispair with thymine) and allowed to undergo a few rounds of DNA replication. The mutational event caused by this mutagen will be
#Question id: 5755
#Unit 8. Inheritance Biology
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
#Question id: 5756
#Unit 8. Inheritance Biology
Type of mutation caused by an addition or deletion of a base in a polypeptide-encoding part of a gene
#Question id: 5757
#Unit 8. Inheritance Biology
A new E. coli mutant was tested for auxotrophy. The mutant grows on:
minimal medium (M) + arginine (A) + proline (P)
M + P + histidine (H)
M + A + H + P
but not on M or on M + A + H. The mutant requires
#Question id: 5758
#Unit 8. Inheritance Biology
#Question id: 5760
#Unit 8. Inheritance Biology
The fluctuation test of Luria and Delbruck (studying resistance to bacteriophge T1 infection) established that