Question

In genetic engineering, what are enzymes used for?

1) Cutting DNA pieces
2) Joining DNA fragments
3) Building new DNA molecules
4) All of the above

Answer 1

In genetic engineering, enzymes such as restriction enzymes and DNA ligase are essential for cutting DNA at specific sites, joining DNA fragments, and building new DNA molecules, fulfilling all the listed functions.

Step-by-step explanation:

Enzymes are used in genetic engineering for cutting DNA pieces, joining DNA fragments, and building new DNA molecules. Restriction enzymes, also known as restriction endonucleases, are used to cut DNA at specific base sequences. DNA ligase is used to join the cut DNA fragments together, creating recombinant DNA molecules. These enzymes play a crucial role in manipulating and modifying DNA in genetic engineering processes.

Enzymes play a critical role in genetic engineering processes. Specifically, restriction enzymes are used to cleave or cut DNA at specific base sequences, which is crucial for isolating specific genes. Following the cutting, another enzyme called DNA ligase is responsible for jointly attaching or ligating DNA fragments, thereby producing recombinant DNA. This recombinant DNA can then be introduced into other organisms to form genetically modified organisms (GMOs). From the options provided, the correct answer is that enzymes are used for all of the above: cutting DNA pieces, joining DNA fragments, and building new DNA molecules.