LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

BIOTECHNOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How do you create recombinant DNA?
A
First, cut the gene and plasmid with the same restriction enzyme. Second, insert the gene into the plasmid.
B
First, insert the gene into the plasmid. Second, cut the gene and plasmid with the same restriction enzyme.
C
First, cut the gene and plasmid with different restriction enzymes. Second, insert the gene into the plasmid.
D
First, insert the gene into the plasmid. Second, cut the gene and plasmid with different restriction enzymes.
Explanation: 

Detailed explanation-1: -A restriction enzyme is a protein isolated from bacteria that cleaves DNA sequences at sequence-specific sites, producing DNA fragments with a known sequence at each end. The use of restriction enzymes is critical to certain laboratory methods, including recombinant DNA technology and genetic engineering.

Detailed explanation-2: -Many restriction enzymes make staggered cuts at or near their recognition sites, producing ends with a single-stranded overhang. If two DNA molecules have matching ends, they can be joined by the enzyme DNA ligase. DNA ligase seals the gap between the molecules, forming a single piece of DNA.

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