Concept explainers
Introduction:
The recombinant DNA technology involves isolation of genetic materials (DNA) from donor organisms (human, plant, or microorganism) and inserts them into recipient organisms after genetic manipulation. The main tools involved in the techniques are
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- Put the following tasks in the order they would occur during a DNA cloning experiment. a. using DNA ligase to seal DNA fragments into vectors b. using a probe to identify a clone in the library c. sequencing the DNA of the clone d. making a DNA library of clones e. cutting genomic DNA with restriction enzymesarrow_forwardThe activity of restriction enzymes may produce fragments with sticky ends. Sticky ends are a) a type of endonucleases. b) dephosphorylated CpG islands. c) unpaired nucleotides. d) double breaks with blunt ends.arrow_forwardWhat is the enzymatic function of restriction enzymes? Group of answer choices a. to cut nucleic acids at specific sites b. to join nucleotides during transcription c. to add new nucleotides to the growing strand of DNA d. to repair breaks in sugar - phosphate backbonesarrow_forward
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- Which method is used to obtain mutants that grow under conditions that the wild type parent cannot grow? a)indirect selction b) direct selection c) screening for possible mutagen ( carcinogens) d) replica platingarrow_forwardPut the following tasks in the order they would occur during a DNA cloning experiment. a. using DNA ligase to seal DNA fragments into vectors b. using a probe to identify a clone in the library c. sequencing the DNA of the clone d. making a DNA library of clones e. cutting genomic DNA with restriction enzymesarrow_forwardWhat are the sticky ends of the restriction fragments? Select one: a. The surfaces of sticky ends contain matching base pairs, allowing fragments to splice. b. The surfaces of sticky ends have glue like substance that allow fragments to splice. c. The surfaces of sticky ends contain the exact same nucleotides, allowing fragments to bond. d. The surfaces of sticky ends have velcro like structure, allowing fragments to bond.arrow_forward
- Describe What are the sticky ends of the restriction fragments? Select one: a. The surfaces of sticky ends contain matching base pairs, allowing fragments to splice. b. The surfaces of sticky ends have glue like substance that allow fragments to splice. c. The surfaces of sticky ends contain the exact same nucleotides, allowing fragments to bond. d. The surfaces of sticky ends have velcro like structure, allowing fragments to bond.arrow_forwardFrom where do we get primers for sequencing DNA? A) they are synthesized by reverse transcriptase B) they are cut out of plasmids using restriction endonucleases C) DNA primase is added to the sequencing reaction and synthesizes the primers D) biotechnology companies synthesize them using organic chemistryarrow_forwardWhich technique rapidly replicates specific DNA fragments without cloning in cells? (a) gel electrophoresis (b) cDNA libraries (c) DNA probe (d) restriction fragment length polymorphism (e) polymerase chain reactionarrow_forward
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