#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: 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
#Question id: 5761
#Unit 8. Inheritance Biology
E. coli cells were spread on an agar plate, producing 1000 colonies. The colonies are replica plated on two agar plates containing the antibiotic kanamycin and one agar plate without antibiotics. All of the colonies are able to grow on the agar plate without antibiotic but only 4 colonies are able to grow on each of the agar plates containing kanamycin. You notice that the four colonies that grew on each of the kanamycin containing plates are in the exact same position. This demonstrates
#Question id: 5762
#Unit 8. Inheritance Biology
An individual cell homozygous for a mutant allele of the gene for a human enzyme contains no detectable activity for that enzyme. The mutation is best described as