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Home Q & A Board Biology-Related Homework Help General Biology
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cb2015 cb2015
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6 years ago
List the main steps involved in converting pre-mRNA to mRNA. Explain the purpose of each step. What will be an ideal response?

Question 2

Draw a general overview of the flow of genetic information from DNA to protein in eukaryote vs. prokarytotes. You
  should construct one drawing for eukaryotes and one for prokaryotes. Label all structures, molecules, processes, and
  cellular compartments What will be an ideal response?
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#1
6 years ago
Answer to q. 1

1) Addition of a 5cap: allows ribosome binding to mRNA and may protect mRNA
transcripts from degradation.
2) Addition of a poly-A tail: aids in the export of the mRNA trancript from the nucleus;
protects mRNA transcripts from degradation; allows ribosome to recognize mRNA for
translation.
3) Removal of introns: removes noncoding sequences.
4) Splicing of exons: joins consecutive coding regions (exons) after the removal of
intervening introns.

Answer to q. 2

The flow diagram should resemble Fig. 13-18.
cb2015 Author
wrote...
#2
6 years ago
TY
wrote...
#3
6 years ago
My pleasure
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