Given below are two statements: Statement I: When two alleles of a gene are not completely dominant over each other and both express themselves fully in the heterozygote, it is called incomplete dominance. Statement II: In incomplete dominance, the phenotypic ratio and genotypic ratio of the F₂ generation are identical. In the light of the above statements, choose the correct answer from the options given below.

Step-by-step solution

Statement I is incorrect because when two alleles of a gene are not completely dominant over each other and both express themselves fully in the heterozygote, it is called codominance, not incomplete dominance. In incomplete dominance, the heterozygote exhibits an intermediate phenotype. Statement II is correct because in incomplete dominance, the F₂ generation exhibits a genotypic ratio of 1:2:1 and a phenotypic ratio of 1:2:1 . Thus, both ratios are identical. Answer: Statement I is incorrect but Statement II is