Correct answer: (d) 1, 2 and 3
Explanation
- A
1 only
(a) 1 only. Marker identification is a real use, but faster breeding and host–pathogen work are also immediate applications. 1 only is incomplete.
- B
2 and 3 only
(b) 2 and 3 only. Statement 1 is equally valid. Not the key.
- C
1 and 3 only
(c) 1 and 3 only. Time-saving in variety development is also claimed for sequence-based breeding. Not the key.
- D
1, 2 and 3
(d) 1, 2 and 3. Genome sequencing can find resistance and drought markers, shorten breeding cycles by informing selection, and map how pathogens interact with crop hosts. All three are accepted near-term uses. This is the official key.
Summary. Official key is (d) 1, 2 and 3. Reading a crop’s genome locates markers for disease resistance and drought tolerance so breeders can select without waiting for every field season. That marker-assisted and genomic selection shortens the time to a new variety. Sequence data also clarify host–pathogen molecular relationships. ICAR and the rice/wheat genomes are neighbouring Indian facts. All three statements stand.
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