You want to shorten gestation length (GL) and reduce birth weight (BW) in your registered Angus herd. Sires are available with EPDs for both of these traits. You know that the accuracies associated with the EPD for BW runs at about 0.80, but the accuracies for gestation length are only about 0.40, since it is not a normally recorded phenotype. Given: OBV(GL) = 2.8 days OBV(BW) = 6.3 1b. I' BV(GL),BV(BW) = 0.25 iGL = igw = -1.0 L = 5 years Calculate: 1. ABVGL/t 2. ABVBw/t 3. ABVGLIBW/t 4. ABV BWIGL/t 5. ABVGLIBW/ABV GL6. ABVBWIGL/ ABV BW 7. Which trait would you select for, and why