Question

Give the flow chart of central dogma

Answer 1

Answer:

The process of replication or copying of DNA involves the action of a DNA Polymerase enzyme that uses a DNA template for the synthesis of another complimentary DNA strand synthesis. So, this is a DNA dependent DNA polymerase. The process of transcription of the DNA code to form RNA involves another enzyme called RNA polymerase which uses DNA as a template to synthesize RNA and hence is a DNA dependent RNA polymerase. The process of formation of DNA from RNA is rare and is called reverse transcription ans is catalyzed by the enzyme Reverse transcriptase that uses RNA as the template to synthesize DNA and hence is a RNA dependent DNA polymerase.

So, the correct option 'A - DNA dependent DNA polymerase, B - DNA dependent RNA polymerase, C - RNA dependent DNA polymerase'.

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Answer 2

Explanation:

Flow of central dogma

DNA to RNA to PROTEIN

During the expression of a protein-coding gene, the information flows from DNA to RNA and from RNA to protein and this directional flow of the information is called as central dogma or molecular biology.

There are four steps in Central Dogma which are as follows.

• Transcription
• Splicing
• Translation
• Replication

Transcription

It is a process in which information which is present in DNA is transferred to messenger RNA (mRNA).

Splicing

In this process, the primary transcript (pre-mRNA) is processed.

Translation

Now, the mature mRNA finds its way to a ribosome where it gets translated.

Replication

This is the final step of Central Dogma in which DNA must be replicated.

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