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Genetically modified organisms
Concepts tested here
- Transgenic plants
All Questions
2009 AIPMT 1 question
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Transgenic plants are the onesOrganisms whose genes have been altered by manipulation are called genetically modified or transgenic organisms.
A transgenic plant is produced by introducing a foreign gene (DNA) into a plant cell, by a vector such as the Ti plasmid or by a direct method, and then regenerating a whole plant from that transformed cell by tissue culture.
Every cell of such a plant carries and expresses the foreign gene.
Plants raised from somatic embryos are somaclones, and plants produced after protoplast fusion are somatic hybrids; neither contains foreign DNA introduced by genetic engineering.
Hence transgenic plants are those generated by introducing foreign DNA into a cell and regenerating a plant from that cell.