Mendelian inheritance in fowls,as a result of parental genes. P = parents,F & F2 = 1st and 2nd generation,D = dominant,R = recessive. Most inherited characteristics or traits are determined by multiple genes (sections of DNA),but some,such as colour in Analusian fowls,are governed by a single gene. These are known as Mendelian,named after Gregor Mendel the founder of genetics. The offspring of most plants and animals contain a mixture of genes from their parents. Certain genes are dominant over others,but if incomplete dominance (or blending) occurs then a new trait will result,in this case a grey colour. Mendelian traits occur in strict mathematical ratios |