Questions Related to gm crops

Multiple choice botany option b: biotechnology and bioinformatics biotechnology in agriculture gm crops transgenic organisms

Which statement is wrong?

  1. Nucleic acid is fragmented by nucleases

  2. Construction of recombinant DNA involves cleaving DNA segments with endonuclease and rejoining with ligase.

  3. Genetic engineering is making artificial limbs and diagnostic instruments

  4. $T _1$ plasmid transforms cells of plants.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In plant genetic engineering, the Ti plasmid can be used to carry foreign genes into plant cells. The Ti plasmid is the disease-causing agent of the soil-borne bacteria Agrobacterium tumefaciens. The Ti plasmid was then used to transform petunia cells in culture. So, the correct option is "D" (T1 plasmid transforms cells of plants).

Multiple choice botany option b: biotechnology and bioinformatics biotechnology in agriculture gm crops transgenic organisms

Ti-plasmid used in genetic engineering has been modified by

  1. Adding tumour forming genes

  2. Deleting tumour forming genes

  3. Adding genes for endonucleases

  4. Deleting genes for endonucleases

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The correct option is B.
Ti plasmid that is tumer-inducing plasmid refers to the plasmid of Agrobacterium tumefaciens. Role of Ti plasmid in biotechnology is that it can be modified into a cloning vector by removing the genes responsible for pathogenicity.