In human beings,the colour of skin is controlled by

Which of the following statements is correct about polygenic inheritance?

In a polygenic trait,an individual with three recessive alleles expresses $50 \%$ of the trait,while an individual with three dominant alleles expresses $80 \%$ of the trait. What is the contribution of each dominant allele to the trait (in $\%$)?

Flower color in plants is an example of quantitative inheritance,and it is controlled by two pairs of genes. What fraction of plants in the $F_2$ generation will show the parental phenotype?

Polygenic inheritance is observed in which of the following?

In human beings,multiple genes are involved in the inheritance of