Poll Genetics & Simple Inheritance Explained

The recent release of a gene marker test for the poll/horn trait in Bos indicus cattle has allowed us to distinguish animals which are homozygous for the polled gene (PP) i.e. those animals which do not carry the horn gene. This article aims to provide a background in simple trait inheritance, required for understanding poll/horn inheritance and predicting mating outcomes using different combinations of poll/horn genotype.