UPSC Prelims · 1990 · GS Paper I · Q29
For developing inbred lines in farm animals, following factors are taken into consideration : 1. The crossbreds should be ofoutstanding type. 2. They should not carry anydetrimental genes. 3. Progeny tested animals. 4. Herd size should be large. Of the statements given above, whichone of the following combinations of factors is most essential ?
- (A)1 and 3
- (B)2 and 3
- (C)1 and 4
- (D)2 and 4
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- History