Thymine dimers are directly repaired with the help of visible light by process known as photoreactivation phosphorylation excision repair photosynthesis TRUE ANSWER : ? YOUR ANSWER : ?
A nonsense mutation may result into an abnormal elongation of a polypeptide a premature termination of the synthesis of a polypeptide modification of mRNA a large deletion within the reading frame of a gene TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following(s) is/are steps in excision repair mechanisms? Ligation Excision All of these Incision TRUE ANSWER : ? YOUR ANSWER : ?
A mutagen is defined as an enzyme that repairs mutations a molecule which stabilizes DNA thus prevents mutations from occurring a chemical or physical agent that induces mutations an inhibitor of gene modification TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following bacterial genome was sequenced first? S. pneumoniae E. coli S. thermophilus H. influenzae TRUE ANSWER : ? YOUR ANSWER : ?
Changes in which of the following characterizes mutations? Both (a) and (b) Phenotype Genotype None of these TRUE ANSWER : ? YOUR ANSWER : ?
The promoter on an expression vector used to overproduce proteins in bacteria is not a regulated promoter a bacterial promoter the natural promoter of the gene being cloned expressed both in bacteria and mammalian cells TRUE ANSWER : ? YOUR ANSWER : ?
Which of these mechanisms for thymine dimers repair lead to mutations? Never leads to mutation Photoreactivation Excision repair SOS repair TRUE ANSWER : ? YOUR ANSWER : ?
Differentiation of four different bases in automated sequencing systems is that each base has distinctive fluorescent tag different radioactive tag cytosine at start unique antibody bound to it TRUE ANSWER : ? YOUR ANSWER : ?
A nonsense mutation introduced into the DNA sequence of a gene may shorten the length of the protein encoded by the gene have no effect on the transcript or protein made cause a shift in reading frame cause premature termination of the mRNA TRUE ANSWER : ? YOUR ANSWER : ?