In $F_{2}$-generation,quantitative inheritance $1: 4: 6: 4: 1$ is obtained instead of

Which of the following traits is controlled by more than one gene?

The inheritance of human skin color is an example of ........

Who first noted polygenic inheritance?

Inheritance of skin colour in humans is an example of

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?