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why is “DNA makes RNA makes proteins” not a good descrotion of a gene expression in eukaryotes?

Question by : why is “DNA makes RNA makes proteins” not a good descrotion of a gene expression in eukaryotes?
why is “DNA makes RNA makes proteins” not a good descrotion of a gene expression in eukaryotes?

Best answer:

Answer by Smeghead
I don’t know what a “descrotion” is, but not all RNAs code for proteins. There are a huge number of genes that code for functional RNAs, without any need to go on and made proteins from them. rRNAs, tRNAs, shRNAs, snoRNAs, etc, etc.

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One Comment

  1. Often, DNA can make RNA and then it can stop there. RNA can be used for many functions in organisms for example gene expression which is at high interest at the moment. It is thought the RNA plays a big part in controlling gene expression.

    For example in a female human, one of the X chromosomes are “Deactivated”. This is done by microRNA (I beleive this specific RNA is called Xist) surrounding the X chromosome, methylating it and as a result deactivating it.

    Therefor the expression “DNA makes RNA makes Proteins” is not always true in eukaryotes as often this process will stop at RNA.

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