Final answer:
The student is asked to describe changes in phenotypes in genetics. The F₂ generation exhibits a 1:2:1 phenotype ratio of red to pink to white, showing incomplete dominance. Another scenario depicts a 3:1 ratio in the F₂ generation, consistent with typical Mendelian inheritance.
Step-by-step explanation:
When describing genetics and inheritance patterns, it appears that the student is being asked to illustrate the changes in phenotypes across generations. According to the information, red and white alleles produced a pink phenotype in the F₂ generation, with a 1:2:1 ratio of red to pink to white phenotype. This exemplifies incomplete dominance, where the heterozygous phenotype is intermediate between the two homozygous phenotypes. Additionally, it is described that the dominant and recessive phenotypes (red and white) show a 3:1 ratio in the F₂ generation, which is characteristic of Mendelian inheritance patterns seen with a single gene having two alleles, one being dominant over the other.