Question

3. Which one of the following statements best describes the first thing researchers need to do to manipulate

Answer 1

Answer;

A. Restriction enzymes would be used to cut the DNA into smaller pieces.

Explanation;

-Restriction enzymes (or restriction endonucleases) are used to cut DNA into smaller fragments. The cuts are always made at specific nucleotide.

-Restriction enzymes are used to cut DNA into smaller pieces because otherwise it is to large to analyze, the DNA is cut into restriction fragments that are several hundred bases long (compared to the millions) in length, of the hundred of known restriction enzymes each cutes DNA at a different sequence of nucleotides.

During gel electrophoresis for example, restriction enzymes cut the DNA into pieces so that they can be separated by gel electrophoresis and read by scientists or researchers.

Answer 2

A. Restriction enzymes would be used to cut the DNA into smaller pieces. The first step in DNA manipulation for genetic engineering is to choose the piece of DNA from a source. Restriction enzymes are used in cutting these DNA pieces.