Which of the following statement is incorrect?

Genetic engineering is making artificial limbs and diagnostic instruments

The incorrect statement is: (c) Genetic engineering is making artificial limbs and diagnostic instruments.

Genetic engineering is not related to making artificial limbs and diagnostic instruments. It is a field of biotechnology that involves manipulating the genetic material (DNA) of organisms to produce specific traits or characteristics. It includes techniques such as gene cloning, recombinant DNA technology, and genetic modification of organisms to enhance desired traits or produce valuable products. Genetic engineering is widely used in agriculture, medicine, and various other fields for applications like producing genetically modified crops, developing therapeutic proteins, and improving disease resistance in organisms.

(a) Nucleic acid is fragmented by nucleases - This statement is correct. Nucleases are enzymes that can break down nucleic acids (DNA or RNA) into smaller fragments.

(b) Construction of recombinant DNA involves cleaning DNA segments with endonuclease and rejoining with ligase - This statement is correct. In the construction of recombinant DNA, DNA segments are first cut using restriction endonucleases (endonucleases), and then the desired segments are joined together using DNA ligase.

(d) Ti plasmid transforms cells of plants - This statement is correct. The Ti (tumor-inducing) plasmid of Agrobacterium tumefaciens is used as a vector to transform and introduce genes into plant cells during genetic engineering experiments. This allows the incorporation of foreign DNA into the plant's genome, leading to the expression of desired traits or characteristics in the transformed plant cells.