DNA is confined to the nucleus to reduce the risk of mutation, why is this a problem?
- because protein synthesis needs to take place outside the necleues in the cytoplasm
how is this overcome?
- the desired section of DNA is transcribed onto a single stranded molecule of RNA
- this mRNA is small enough to leave the nucleus through nucleur pores and enter the cytoplasm where the genetic code it contains is used to determine the sequence of amino acidss in the proteins being synthesised.
describe the structure of mRNA
- single stranded
- complimentary, not identical to DNA strand
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