2 biology molecular basis of inheritance
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The process of copying genetic information from one strand of the DNA into RNA is termed as transcription.
In transcription only a segment of DNA and only one of the strands is copied into RNA because
if both strands act a template, they would code for RNA molecule with different sequences and the sequences of amino acids in the coded protein would be different.
the two RNA molecules would be complementary to each other and would form a double stranded RNA which would prevent translation.
Transcription unit
A transcription unit consists of
A Promoter
The Structural gene
A Terminator
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