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Question

How does an alien DNA grain entry into a plant cell by 'biolistics' method?

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Solution

Biolistics is a technique in genetic engineering in which tiny metal pellets coated with DNA are propelled into living cells at high velocities. It is commonly called as the gene gun. In this micro particles of heavy metal, usually gold, are coated with the new desired DNA or gene. It may also included the marker gene which is used for detection that whether the gene is is has inserted into the old DNA or not. It also helps by showing the position of new gene in old chromosomes as same gene on different loci on same chromosome may have different function.

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