500 9. The restriction site sequence for the restriction enzyme Sau3AI and BamHI include four identical bases, making their sticky ends identical as shown in the figure. Let's say you have foreign DNA whose flanking regions were cut with Sau3AI. Also, you want to use a plasmid containing a BamHI restriction site. BamHI Lenhere (1) Would it be possible to ligate the foreign DNA into the BamHI site of the plasmid? Explain. (2) Would it be possible to cut the ligated sites with Sau3AI? What about BamHI? What problems will you expect if you use BamHI? Sau3Al T-A-G-G G-A-T-C C-T-A-G →! C-C-T-A-G C-T-A-G G-A-T-C-C G-A-T-C 10. An ampicillin-resistant, tetracycline-resistant plasmid, pBR322, is cut with Pstl, which cleaves within the ampi gene. The cut plasmid is ligated with Pstl digested Drosophila DNA to prepare a genomic library, and t
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
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