The right segment of octopine T-DNA (TR) is necessary for all of these enzymes for agropine biosynthesis tumour formation conjugative transfer TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following are used as selection marker for the cells transformed with Agrobacterium? Streptomycin phosphotransferase Hygromycin phosphotransferase any of the above Neomycin phosphotransferase TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is true about T DNA? Integration of T DNA occurs only at one specific sites in the plant nuclear DNA Integration of T DNA can occur at many different, apparently random, sites in the plant nuclear DNA Integration of T DNA occurs at one site that may be random in the plant nuclear DNA Integration of T DNA occurs at two specific sites in the plant nuclear DNA TRUE ANSWER : ? YOUR ANSWER : ?
Direct DNA uptake by protoplasts can be stimulated by decanal luciferin polyethylene glycol (PEG) all of these TRUE ANSWER : ? YOUR ANSWER : ?
Microinjection involves injection of DNA into bigger cells All of these injection of large amount of DNA injection with needle having diameter greater than cell diameter TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not true about the direct repeats flanking T-DNA? These repeats are transferred intact to the plant genome All of these These are important in integration mechanism They are conserved between nopaline and octopine Ti-plasmids TRUE ANSWER : ? YOUR ANSWER : ?
In response to the activating signal molecule, an endonuclease is produced that causes nicks in the T-DNA. It is encoded by vir D vir A vir C vir B TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is true about Agrobacterium tumefaciens? It causes crown gall disease of plants It infects dicotyledonous angiosperms All of these It infects gymosperms TRUE ANSWER : ? YOUR ANSWER : ?
In a plant tumour cell only a small specific segment of callus T DNA is incorporated different parts of the Ti-plasmid are incorporated may vary from plant to plant complete Ti plasmid is incorporated in plant nuclear DNA TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following plant signal molecules regulate the expression of vir B, C, D and E in case of tobacco? Acetosyringone α-hydroxy syringone None of these Both (a) and (b) TRUE ANSWER : ? YOUR ANSWER : ?