Question

Which of the following lists steps of mRNA production in eukaryotes in the correct order?View Available Hint(s)Which of the following lists steps of mRNA production in eukaryotes in the correct order?Transcription, 5' cap addition, addition of poly-A tail, exon splicing, passage through nuclear membraneTranscription, 5' cap addition, addition of poly-A tail, passage through nuclear membrane, exon splicingTranscription, addition of poly-A tail, 5' cap addition, exon splicing, passage through nuclear membrane5' cap addition, addition of poly-A tail, exon splicing, passage through nuclear membrane, transcription

Answer 1

Transcription, 5' cap addition, addition of poly-A tail, exon splicing, passage through nuclear membrane

Step-by-step explanation:

After being synthesized during the transcription, mRNA (pre-mRNA) must be modified in order to be functional (mature mRNA) and exported from the nucleus for the process of translation.Modification of pre-mRNA include:

1. 5' capping-addition of 7-methylguanosine to the 5' end which protects the pre-mRNA
2. addition of adenine residues to form a poly(A) tail whic is also with protective role (from ribonuclease digestion)
3. RNA splicing-excision of introns and reconection of exons

Modified mRNA can now be transported from the nucleus into the cytoplasm.