Single nucleotide polymorphisms are the most commonly observed genetic variation among particular population, generally known as SNPs (pronounced “snips”). The main objective of the current research was recognition of SNP C-2161G in promoter region of prolactin gene in „N‟ strain of White Leghorn and its interrelation with production traits. | Single nucleotide polymorphism C-2161G in promoter region of prolactin gene in N strain of white leghorn