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The diagram shows an important concept in the genetic implication of $DNA$. Fill in the blanks $A$ to $C$.
$A$ -Transcription, $B$ - Translation, $C$ - Francis Crick
$A$ - Translation, $B$ - Extension, $C$ - Rosalind Franklin
$A$ - Transcription, $B$ - Replication, $C$ - James Watson
$A$ - Translation, $B$ - Transcription, $C$ - Ervin Chargaff
Solution
(a) : The expression of the genetic material occurs normally through the production of proteins. This involves two consecutive steps. These are transcription and translation. The $DNA$ codes for the production of messenger $RNA\ (mRNA)$ during transcription. Messenger $RNA$ carries coded information to ribosomes. The ribosomes read this information and use it for protein synthesis. This process is called translation. $F.H.C.$ Crick described this undirectional flow of information in $1958$ as the ‘central dogma of molecular biology’.
