AP BIOLOGY

Detailed explanation-1: -The crossing of a red flowered plant and a white flowered plant produces all the offspring with pink flowers. This cross illustrates red and white exhibit incomplete dominance. This situation occurs due to the blending of both the alleles.

Detailed explanation-2: -The type of inheritance shown when a red flowering plants is crossed with a white flowering plant and only pink-flowering plants are produced is INCOMPLETE DOMINANCE.

Detailed explanation-3: -The crossing of a red flowered plant and a white flowered plant, produces all the offspring with pink flowers.

Detailed explanation-4: -Answer and Explanation: The RR genotype in snapdragon shows the phenotype of red flowers. The Rr genotype shows the phenotype of pink flowers and the rr genotypic character shows the phenotype of white flower. This means that all the plants which are present as the progeny have the genotype as Rr.

Detailed explanation-5: -This shows incomplete dominance in snapdragon plants. When two pink snapdragon plants are crossed, they produce seeds that develop into three types of flowering plants (red, white, pink) in the ratio of 1:2:1. Therefore, the correct option is a. Incomplete dominance.