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Because there's one copy of the gene in DNA (2 for diploid species including humans). It would take a LONG time to make an appreciable amount of protein from two copies of the gene. But the cell can make many copies of mRNA to quickly make larger amounts of the desired protein

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12y ago
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9y ago

Because there's one copy of the gene in DNA (2 for diploid species including humans). It would take a LONG time to make an appreciable amount of protein from two copies of the gene. But the cell can make many copies of mRNA to quickly make larger amounts of the desired protein.

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11y ago

In Eukaryotes, DNA is contained within the nucleus to protect it from degradation. This means that the DNA should remain protected, as a "master copy" of the blueprints for proteins.

mRNA is necessary because DNA cannot leave the nucleus, but RNA can. The use of mRNA means that the DNA can remain in the nucleus, while the RNA goes to the ribosomes for translation.

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11y ago

DNA does not leave the cell nucleus. Therefore, the genetic code must be transcribed by mRNA and carried to the ribosomes for translation.

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10y ago

Think of RNA like a train on a railroad. The payload (code) can't get where it is going without the train.

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Q: Why cant the code be taken directly from DNA Why is RNA necessary to act as a messanger?
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