Q11: To construct a selection index which of the following is... - Animal Genetics and Breeding - ICAR AIEEA PG 2024 - Animal Sciences | Agrigyan

Hazel's selection index ($I = b_1 P_1 + b_2 P_2 + ... + b_n P_n$) requires phenotypic and genetic variances, phenotypic and genetic covariances, and relative economic weights ($a_i$) to calculate the weighting coefficients ($b$). The individual breeding values ($A$) are what the index estimates; they are not known beforehand and thus not necessary as input parameters.