In tryptophan operon
Non-proteinaceous aporepressor is synthesised by $R-$gene
Normally chorismic acid is not converted into tryptophan
Repression is mostly connected with a catabolic pathway
Enzymes produced by structural genes normally present in the cell
Number of autosomes in human sperm is
The accessibility of promoter regions of bacterial $DNA$ in many cases regulated by the interaction of proteins with sequences termed
Out of the two strands of $DNA$ one is carrying genetic information for transcription and it is called