Final answer:
Polygenic inheritance refers to the phenomenon where multiple genes contribute to the expression of a trait, and examples include a mix of eye colors and the coloration of a cow's coat.
Step-by-step explanation:
Polygenic inheritance refers to the phenomenon where multiple genes contribute to the expression of a trait. An example of polygenic inheritance can be seen in a mix of blue, green, and brown eye colors (B). Each eye color is controlled by multiple genes, and the combination of these genes determines the final eye color. Another example is a cow that has red and white dominant coloring (Aa), which is controlled by multiple genes that contribute to the coat color.
In the case of the plant that has pink flowers produced from a plant that has red flowers and a plant that has white flowers (C), this represents incomplete dominance. Incomplete dominance occurs when neither allele is dominant over the other, resulting in a blending of traits. Lastly, a plant that has green seeds produced from a plant that has yellow seeds and a plant that has green seeds (D) represents a simple dominant-recessive inheritance pattern, not polygenic inheritance.