Answer:
Accuracy of DNA and mRNA codes are assured through proofreading and complimentary base pairing.
Explanation:
DNA replication is the process of producing two identical daughters DNA molecules from a parent DNA molecule. During the process of replication, the accuracy of the DNA is usually ensured by mean of proofreading, which is carried out by DNA polymerase enzyme. This enzyme accurately copy the genes in the parent molecule into the daughter molecules.
During the transcription stage of protein synthesis, the transcription process is proofread by RNA polymerase, which catalyzed the process of producing mRNA. During the translation process, the accuracy of the mRNA codes are ensure by mean of complimentary pairing of bases; adenine bind to uracil while guanine bind to cytosine.
The accuracy of DNA and mRNA codes is assured by proofreading through DNA polymerase and RNA polymerase.
Proofreading is a process of checking the newly added base before adding more bases.
The process of proofreading is done by Polymerase enzyme.
The polymerase enzyme checks that the base it added is complementary to the next base or not, then carries on the process.
In the case of mRNA, proofreading happens when during protein synthesis.
One method is releasing an incorrect amino acyl tRNA before peptide bond formation.
Thus, proofreading is the method to check accuracy.
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