Phenotypic Expression in Plant Genetics

In genetics, the phenotypic expression of an organism is influenced by both its genotype and environmental factors. A particular plant species exhibits a variety of flower colors, including red, white, and pink. The red flower color is a result of a dominant allele (R), while the white color results from a recessive allele (r). When a homozygous red-flowered plant (RR) is crossed with a homozygous white-flowered plant (rr), all offspring display red flowers. However, when two pink-flowered plants (Rr) are crossed, what is the expected phenotypic ratio of their offspring?