The Nucleus and its Functional Domains

ID #1197

If the 45s rRNA are created in the nucleolus then where exactly are tRNA and mRNA created within the nucleus? Are they spread out in nucleus, towards the periphery, close to the nucleolus, or somewhere else?

All other transcription occurs wherever that particular gene lies on its own chromosome. If you need to transcribe gene X on Chromosome 7, then that region of chromosome 7 will be unwound, and gene X will be looped out into the interchromosomal territory right outside the space occupied by chromosome 7. And it doesn't matter for this example whether gene X is a tRNA gene or a mRNA gene (unless you're an RNA polymerase, and then it makes all the difference in the world!).

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