3. Restriction endonucleases cut DNA strands and leave either blunt or sticky ends. Describe the difference...
DNA fragments cut by most restriction enzymes have: double-stranded complementary ends. either only sequences of Gs or only sequences of Cs. cuts made at random points along one of the strands. protruding sticky ends.
Identify two restriction endonucleases that could be used to make sticky ends near the 5’ end of this DNA sequence (upper strand) so that it could be incorporated into a new plasmid. You have a short list of them in Table 9-2, and the specific, short sequences of bases that other enzymes cut at are easily obtained from web resources. You must cut as near to the 5' end as possible. Indicate the specific sequences of bases for each endonuclease...
15- Which option BEST describes sticky ends by restriction enzymes B. Sticky ends A. Sticky ends are DNA fragments that carry a higher charge than normal after they have been cleaved are DNA fragments cleaved by a restriction enzyme so that one strand is longer than the other C. Sticky ends are DNA fragments cleaved by a restriction enzyme so that both strands are the same length. D. Sticky ends are DNA fragments that attract a carbohydrate molecule to one...
Restriction endonucleases.... a) are used to cut RNA at defined sequences. b) can be used to create pieces of DNA with cohesive ends. c) have no specific sequence requirements for recognition or cutting. d) were identified as a protozoan defense mechanism against viruses. e) are used in standard DNA sequencing reactions.
find the errors Restriction enzymes recognize specific DNA sequences and cut each strand of DNA at specific locations at the target sequence. The result of digesting a particular genome with a particular restriction enzyme is a collection of restriction fragments of defined length and composition. These can be used to generate restriction maps or create pieces with sticky ends. These sticky ends can be used to attach to other fragments that have sticky ends caused by cutting with a different...
7. Decide whether the DNA fragment shown below will be cut by the following restriction endonucleases: EcoRI (5’-GAATTC-3’), AluI (5’-AGCT-3’), PstI (5’-CTGCAG-3’). For each one that cuts, how many products will be produced? 5’-AAGAATTGCGGAATTCGAGCTTAAGGGCCGCGCCGAAGCTTTAAA-3’ 3’-TTCTTAACGCCTTAAGCTCGAATTCCCGGCGCGGCTTCGAAATTT-5’
RECOMBINANT DNA: PLASMID VECTOR engineering is the direct manipulation of an organism's DNA using nology. To begin the recombinant DNA process, scientists must first ide at codes for the production of the protein they want to manufacture. One is to go backwards from the amino acid sequence of the desired protein to ide sequence of the gene. After scientists have identified the gene, they m it. Restriction enzymes or endonucleases from bacterial cells are key in th ia produce restriction...
Which is not true about restriction enzymes? a. They cut RNA b. They evolved as a bacteria defense mechanism c. They can leave single-stranded overhanging sequences called Sticky ends d. They recognize a specific target sequence e.They cut DNA
14. Restriction endonucleases are a. enzymes that restrict DNA synthesis b. enzymes that cut DNA in specific sequences c. nuclear proteins that are involved in transcription d. components of the ribosomes involved in protein synthesis 15. The first step in southern blotting is a. converting DNA into RNA b. cutting high molecular weight DNA into smaller pieces c. converting RNA into DNA d. radioactively labeling the DNA so it can be detected after the procedure is complete 16. The major...
The table shows where different restriction endonucleases (restriction enzymes) cleave DNA. The abbreviation R represents the purines (adenine and guanine). The pyrimidines (cytosine, thymine, and uracil) are abbreviated as Y. The abbreviation W represents adenine or thymine. Enzyme EcoRI EcoRV Target sequence 5' GAATTC 3 3' CTTAAG 5 5' GATATC 3 3' CTATAG 5 5' GGCC 3' 3' CCGG 5 5' AAGCTT 3 3' TTCGAA 5 5' RGGWCCY 3 3' YCCWGGR 5 Cleavage 5G AATTC 3' 3' CTTAA G 5'...