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Evaluation · Q25

Q.Is their any possibilities to transfer a suitable desirable gene to host plant without vector? Justify your answer.

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Step 1. State the possibility. The chapter explicitly names 'Direct or vectorless gene transfer' as one of the two categories of plant gene-transfer method, confirming that transferring a gene without a vector is indeed possible.

Step 2. List the actual methods. Five specific direct methods are described: chemical-mediated transfer (PEG or dextran sulphate inducing DNA uptake into protoplasts), microinjection (DNA injected directly into the nucleus with a fine glass needle), electroporation (a high-voltage pulse opening transient membrane pores), liposome-mediated transfer/lipofection (DNA encapsulated in phospholipid vesicles that fuse with the vacuole), and biolistics (DNA-coated gold/tungsten particles fired by a gene gun). …

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