Genetic engineering has been successfully used for producing

(A)transgenic mice for testing safety of polio vaccine before use in humans
(B)transgenic models for studying new treatments for certain cardiac diseases
(C)transgenic cow-Rosie which produces high fat milk for making ghee
(D)animals like bulls for farm work as they have super power

The NCERT line that answers it

Verbatim line

Transgenic mice are being developed for use in testing the safety of vaccines before they are used on humans.

Chapter: Biotechnology and its Applications
Section: 10.3 TRANSGENIC ANIMALS
Page: 7
Words matched: 32 of 32

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'Transgenic mice are being developed for use in testing the safety of vaccines before they are used on humans' and specifically mentions 'testing the safety of the polio vaccine', which directly matches option A.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

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Question text is reproduced from the published NEET 2010 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.