4. Answer the following questions on combining ability using the performance indexes of the four pure breeds and their r

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4 Answer The Following Questions On Combining Ability Using The Performance Indexes Of The Four Pure Breeds And Their R 1 (22.42 KiB) Viewed 129 times

4. Answer the following questions on combining ability using the performance indexes of the four pure breeds and their reciprocal crosses. The values indicate relative performance values. Breed of male Female Avg A B с D A 95 102 122 121 Breed of female B 102 108 88 82 с 83 110 110 117 D 80 100 120 60 Male avg overall avg a. Which breed has the best purebred performance? b. Rank the breeds for general combining ability as a female. c. Rank the breeds for general combining ability as a male. d. Which cross shows the best specific combining ability? e. Which breed would you choose for a terminal sire in a crossing program? f. Which breeds have the largest difference between reciprocal crosses? a