Detection of lethal SNP (A781G) in growth hormone (GN) gene of Indian sheep of the grrevealed the ex owth hormone (GN) gene was analyzed in 112 Vembur sheep. Haelll-RFLPof the GN gene (422bp) existence of two genotype viz., AA (366 and 56 bp) and AB 422, 366 and 56 bp),and two alleles viz.,A and B.Genotypic frequencies for AA and AB were 0.71 and 0.29 for A and B respectively.BB genotype was absent.Highly significant Chi-square value (P