In which plant does the inheritance of flower color not follow Mendelian principles?

In a cross between male and female pea plants,both are heterozygous for round seeds,what percentage of the progeny will be having intermediate sized starch grains (in $\%$)?

In garden pea,starch is synthesised effectively in

In a Mendelian cross,the $F_2$ generation shows that both the genotypic ratio and the phenotypic ratio are the same,i.e.,$1:2:1$. This indicates:

$A$ grey-feathered chicken is crossed with another chicken of the same phenotype. The offspring are $15$ grey,$6$ black,and $8$ white. What will be the phenotype of the offspring produced by selfing the grey chickens and the black chickens from their progeny?

In which of the following is incomplete dominance observed?