Incomplete dominance is a type of dominance in which the phenotype of a heterozygote is intermediate between the two homozygous parents having contracting phenotypes. When two homozygous parents having two different alleles of gene for flower colour are crossed, the F1 generation will be of a different flower colour compared to both the parents. The F2 generation will have plants with all the three different flower colours. The genotypic ratio obtained in the F2 generation will be the same irrespective of whether it is complete dominance or incomplete dominance. The phenotypic ratio however will be same as genotypic ratio, that is 1:2:1 where 1 part will be homozygous dominant, 2 part will be heterozygous showing new flower colour and 1 part will be homozygous recessive.