Primer extension kinetics

[Wen Huang]

Hi

Does anybody know the kinetics of primer extension reaction? Is it  
linear?

A related question is, under the temperature of a primer extension  
reaction, does the primer-template hybrid gets disassociated? If they  
do, to what extent, in other words, what magnitude is K as compared to  
k in the primer extension step.

Thanks a lot.

Wen