1. b. Discuss the five types of RNA. 2. c. What is an expression ...

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1. b. Discuss the five types of RNA.
2. c. What is an expression library?
3. b. Explain why it is important that the peptide chains are flexible.
4. c. Define reporter genes and discuss several of their potential uses.
5. b. What different regions are found within a chromosome?
6. a. Describe a peptide bond and how it forms.
7. a Explain what DNA probes are used for.
8. b. How is excessive telomere length prevented?
9.b. Compare and contrast genomic and cDNA libraries.
10. a. Describe how phosphorylation can regulate protein activity.
11. a. Describe homologous recombination repair of dsDNA breaks.
b. Discuss the evidence supporting the idea that RNA evolved before DNA and was the original hereditary material.
12. c. Discuss the involvement of loss of telomerase activity in dyskeratosis congenita.
13. c. Discuss the four important features of DNA vectors.

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Question 1b: Discuss the five types of RNA
The five types of RNA are rRNA, mRNA, tRNA, snRNA, and snoRNA. Both rRNA and rRNA often translate genetic information into proteins. Besides, the bases of each of these two types of RNA are highly modified (Allison, 2007). The rRNA folds properly whenever assembled with ribosomal proteins. The proteins often direct the order of folding. Nucleases process the structure of tRNA at each end. The average length of the tRNA is 76 nt. Regardless of the nt sequence, tRNA has the same general shape. Also, tRNA has ACC at the third end, where the amino acid attaches (Allison, 2007). mRNA, which stores genetic information, tends to be more linear when compared to the other types. snRNA, whose role is to regulate gene expression, appears as a small nuclear. snoRNA is a small nucleolar that serves to guide the chemical actions of the other four RNAs.
Question 2c: What is an expression library?
An expression library refers to a bacteriophage or plasmid expression vector constituted of E. Coli promoter, which is situated...
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