Biological Classification And System Of Classification Question 506
Question: Natural genetic engineer is
[Orissa JEE 2004]
Options:
A) Bacillus subtilis
B) Pseudomonas sp.
C) Escherichia coli
D) Agrobacterium tumefaciens
Show Answer
Answer:
Correct Answer: D
Solution:
Agrobacterium tumefaciens is a Gram negative soil bacteria, which has natural genetic engineering capability by which it integrates its plasmid genes into plant genome.
This is a natural process and researchers are exploiting bacteria’s ability to transfer our gene of interest into the plants.
Agrobacterium tumefaciens will transfer genes (T-DNA region of Ti plasmid) into the plant that produces its food or nutrient called as opines (opines are not needed for plants).
Apart from that, it also integrates genes for cell division and proliferation leading to crown gall disease. So that, more number of cells result in more production of opines.
BETA
