Recombinant DNA
A molecular technique in which DNA sequences between two oligonucleotide primers can be amplified is known as

polymerase chain reaction
DNA replication
northern blotting
southern blotting

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Recombinant DNA
Bacterial cells protect their own DNA from degradation by restriction endonucleases by

methylating the DNA at the sites that the enzyme recognizes
not producing any restriction endonucleases
deleting all recognition sites from the genome
having anti restriction endonucleases

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Recombinant DNA
The advantage of using DNA polymerases from thermophilic organisms in PCR is that

All of these
the DNA polymerases of these bacteria never make mistakes while replicating DNA
the DNA polymerases of these bacteria are much faster than those from other organisms
the DNA polymerases of these bacteria can withstand the high temperatures needed to denature the DNA strands

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