Phytoplasmas are specialized bacteria that are obligate parasites of the phloem tissue. They are mainly

spread by insects in the families Cicadellidae (leaf hoppers),

Fulgoroidae (plant hoppers), and Psyllidae (jumping plant

lice). 

TLS Online TPP Program

#Id: 699

#Unit 3. Fundamental Processes

Frameshifts normally occurs homopolymeric sequences as long sequence of dTn:dAn

TLS Online TPP Program

#Id: 700

#Unit 3. Fundamental Processes

As a general rule, increased processivity reduces the likelihood of slippage at long sequence of dTn:dAn or frameshift mutation 

TLS Online TPP Program

#Id: 701

#Unit 3. Fundamental Processes

Which of the polymerase can recognise A-A complimentary base pairs as normal

1. I 2. II 3. III     4. IV 

TLS Online TPP Program

#Id: 702

#Unit 3. Fundamental Processes

The replicase activity of DNA polymerase III was originally discovered by a conditional lethal mutation in the dnaE locus, which codes for the 130 kD, a subunit that possesses the DNA synthetic activity.

TLS Online TPP Program

#Id: 703

#Unit 3. Fundamental Processes

The 3’–5’ exonucleolytic proofreading activity is found in E, coded by the dnaQ gene

TLS Online TPP Program

#Id: 704

#Unit 3. Fundamental Processes

Mutations in dnaQ showed increased mutation frequency with by103-folds