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s2008m [1.1K]
2 years ago
13

The process of transcription and splicing of mRNA is shown above. What statement accurately describes these two steps?

Biology
2 answers:
devlian [24]2 years ago
6 0

Transcription and splicing only occur in eukaryotic cells. Transcription and splicing both occur in the nucleus.

Explanation:

Transcription is mediated by RNA polymerases that transcribe the DNA into RNA. In eukaryotes, because coding regions (exons) on the DNA are occasionally interspersed with non-coding regions (introns), the formed RNA (usually called nascent RNA) need to be spliced to remove the non-coding parts. This forms a mature messenger-RNA. All this occurs in the nucleus of eukaryotic cells and only after the mature mRNA is formed is it exported to the cytosol for translation into proteins by ribosomes.

Splicing does not occur in prokaryotic cells because their genome is all composed of coding regions. Therefore transcription on DNA produces, directly, a mature mRNA.  

Learn More:

For more on transcription and splicing of RNA check out;

brainly.com/question/13361343

brainly.com/question/831157

brainly.com/question/13827219

brainly.com/question/14082025

brainly.com/question/12372867

#LearnWithBrainly

g100num [7]2 years ago
5 0

Answer:

a

Explanation:

i took the test

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