Taq polymerase offers three main advantages when used in PCR (polymerase chain reaction). 

1. Thermostability– Taq polymerase is a thermostable DNA polymerase that can remain stable at higher temperatures of up to 95°C. This is critical because this is the temperature at which DNA denatures, which is a key step in the PCR reaction. 
2. Increased Efficiency & Lower Cost– Because of its thermostable nature, Taq polymerase remains enzymatically active after high-temperature cycles in PCR. This eliminates the need to add new enzymes after each cycle, which makes the process more efficient while also lowering the cost. 
3. Higher Amplification Capacity– Taq polymerase performs its enzymatic activity most efficiently between 75°Cand 80°C. On reaching its optimal temperature, Taq polymerase becomes fully activated. At 72°C,it is capable of swiftly replicating a DNA strand consisting of 1000 base pairs in under 10 seconds.