AP BIOLOGY

Detailed explanation-1: -A trait is defined as a variation in the physical appearance of a heritable characteristic. The characteristics included plant height, seed texture, seed color, flower color, pea-pod size, pea-pod color, and flower position.

Detailed explanation-2: -In a plant, flower colour is the example of quantitative trait and controlled by one gene pair.

Detailed explanation-3: -The genotype at the P locus determines whether flower color is purple or red-pink. Individuals that are either PP or Pp have purple flowers, whereas individuals that are pp are pink or red, depending on the genotype at the I locus.

Detailed explanation-4: -There are commonly four distinct whorls of flower parts: (1) an outer calyx consisting of sepals; within it lies (2) the corolla, consisting of petals; (3) the androecium, or group of stamens; and in the centre is (4) the gynoecium, consisting of the pistils.