On which strand of DNA ,m RNA is constructed
Answers
You've asked a nomenclature question. mRNA is made from a DNA template, and DNA is double-stranded. During transcription, the "template strand" is the DNA strand that is the complement of the mRNA. The "coding strand" is the DNA strand that has the same sequence (DNA ATTGC would be RNA AUUGC) as the mRNA transcript. In a genome, genes are NOT arranged so that there is a single "template" strand - for some transcripts, the "top" strand is the template, and for others, it's the "bottom" strand (FYI these strands have nomenclature, too, and the template and coding strands are also known by other names). It's all quite complicated because it's a point-of-view nomenclature thing. When I teach this, we spend more time than you'd think going over which strand is which, in which situation, etc. For a single gene, it makes sense, but then you pull back to see a 'big picture' and how genes are arranged, and it usually gets a bit confusing. If you need to know this, spend some time on it and expect it to take a while to sink in.
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mRNA is made from DNA template ,and DNA is double stranded. during transcription, the " template strand"is the DNA strand that is the compliment of mRNA .The " coding strand "is the DNA strand that has same sequence as the mRNA transmit.