Question

Choose the correct answer from the alternatives given :
The given flow chart represents the flow of genetic information between biomolecules. identify the processes A, B, C and D and select the correct option.

• A. A - Translation, B - Transcription, C- Replication, D - Reverse Transcription
• B. A - Replication, B - Transcription, C - Translation, D - Reverse Transcription
• C. A - Replication, B - Transcription, C - Reverse Transcription, D - Translation
• D. A - Replication, B - Reverse Transcription, C - Transcription, D - Translation

Answer 1

Answer: (C)

A - Replication, B - Transcription, C - Reverse Transcription, D - Translation

A. DNA replication refers to the process.of formation of two similar copies of DNA using parental DNA as template. The expression of the genetic material occurs normally through the production of proteins. This involves two consecutive steps. These are transcription and translation.

B. The DNA codes for the production of messenger RNA (mRNA) during-transcription.

C. Many tumour viruses contain RNA as genetic material and replicate by first synthesizing a complementary DNA. This process is called reverse transcription (feminism). It is carried out by an RNA-dependent DNA polymerase called reverse transcriptase.

D. mRNA carries coded information to ribosomes. The ribosomes read this information and use it protein synthesis. This process is called translation. Crick described this unidirectional flow of information in 1958 as the central dogma of molecular biology.

So, the correct answer is 'A - Replication, B - Transcription, C - Reverse Transcription, D - Translation'.