AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

RECOMBINANT DNA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Acts as molecular scissors and cuts DNA
A
Plasmids
B
Restriction enzymes
C
Bacteria
Explanation: 

Detailed explanation-1: -Restriction enzymes are also called “molecular scissors” as they cleave DNA at or near specific recognition sequences known as restriction sites. These enzymes make one incision on each of the two strands of DNA and are also called restriction endonucleases.

Detailed explanation-2: -Restriction enzymes are enzymes that have a specific restriction. For example, because the DNA strand is a lengthy strand, restriction enzymes are employed to cut the strand at specified locations. Eco RI, Bam H, and other molecular scissors are examples.

Detailed explanation-3: -Examples of molecular scissors are Eco RI, Bam H etc. restriction enzymes are of two types based on their cleaving patterns-endonucleases and exonucleases.

Detailed explanation-4: -Restriction enzymes are DNA-cutting enzymes. Each enzyme recognizes one or a few target sequences and cuts DNA at or near those sequences. Many restriction enzymes make staggered cuts, producing ends with single-stranded DNA overhangs.

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