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MODEL PAPER 1 — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMODEL PAPER 12 Marks
Question
When a foreign DNA is introduced into an organism, how it is maintained in the host and how it is transferred to the progeny of the organism?
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Answer

Foreign gene is usually ligated to a plasmid vector and introduced in the host. As plasmid replicates and makes multiple copies of itself, so does the foreign gene gets replicated and its copies are made. When the most organism divides, its progeny also receive the plasmid DNA containing the foreign gene.

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