(a) The process of copying genetic information from one strand of DNA into RNA is called transcription.
There are two DNA strands in the structural gene of a transcription unit i.e. template strand and coding strand.
Difference between template strand and coding strand –
The polarity of template strand is 3’ →5’ and the polarity of coding strand is 5’→3’.
(b) Introns or the intervening sequence are considered as the non-coding part of the genes, while the exons or the expressed sequence are known to be as the coding part for proteins of the genes.
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