Question
How does Agrobacterium tumefaciens act as a suitable vector in biotechnology experiments? Cite an example, where it has been successfully used as a vector.
✓
Answer
- Agrobacterium tumefaciens is a pathogen of several dicot plants.
- It is able to deliver a piece of DNA, called T-DNA into the plant cells and transform them into tumour cells; it dictates the host cells to synthesise its nutrients.
- The Tumour inducing (Ti) plasmid of this bacterium is modified and made non-pathogenic.
- Though it is non-pathogenic, it still has the capacity to deliver its Ti plasmid to the plants and hence, the genes of interest ligated to it; thus it acts as a suitable vector in biotechnology experiments.
- It has been used to transfer nematode-specific genes into tobacco plants, to make them resistant to the nematode, Meloidegyne incognitia, that attacks the roots of tobacco plant.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What is global warming? List four strategies for reducing global warming.
With the revolution in information technology, now it has become an integral part of everybody's live, living in rural and urban India. You are asked to address the gathering of students of eco-clubs of your neighbourhood schools on generation and management of e-waste.
- Write how e-waste is generated.
- Explain how would you address the awareness issue of e-waste management amongst the students.
- How have the developed countries exploited the developing countries with respect to e-waste managements?
Women are often blamed for producing female children. Consequently, they are ill treated and ostracised. How will you address this issue scientifically if you were to conduct an awareness programme to highlight the values involved?
What are the hormones of kidney? What function do they carry out ?
- Name the kind of diseases/ disorders that are likely to occur in humans if
- Mutation in the gene that codes for an enzyme phenyl alanine hydrolase occurs,
- There is an extra copy of chromosome 21,
- The karyotype is XXY.
- Mention any one symptom of the diseases/ disorders named above.
Explain the causes of global warming. Why is it warning to mankind?
Identify the figure given alongside.
Sketch and label T. S. of angiospermic anther.
Give scientific : We are able to hear the chirping of the birds and recognize the sound of the bird.
“Father is responsible for determination of sex of child and not the mother”. Justify.