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Only the _____ part of Drosophila is transgenic and the rest is not. This is known as ______

(a) germline cell, mosaic

(b) nurse cells, mosaic

(c) germline cells, hybrid

(d) nurse cells, hybrid

The question was posed to me in exam.

The question is from Drosophila in portion Using Other Organisms of Genetic Engineering

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The correct option is (a) germline cell, mosaic

The best I can explain: Only the germline cells portion (but not necessarily all germline cells) is modified and the rest is non-transgenic. This is collectively known as mosaic.

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