Question

No exceptions to the central dogma exist. Rna is always transcribed from dna, and rna is translated to produce proteins. True or false?.

Answer 1

The statement 'no exceptions to the central dogma exist. RNA is always transcribed from DNA, and RNA is translated to produce proteins' is false.

Central dogma can be described as a process in which information from the DNA is converted into mRNA which in turn makes proteins. The process of making mRNA from DNA is referred to as transcription. The process of translating the mRNA into an amino acid sequence for the formation of proteins is referred to as translation.

When the retroviruses were discovered, an exception in the central dogma was observed. Retroviruses could change information from RNA to DNA through reverse transcriptase. Hence, the idea that DNA always changes into RNA is not correct as, in some cases like the retrovirus, RNA can convert into DNA.

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