Final answer:
Monica's corn breeding experiment involved a cross between two parent corn plants with different genotypes, resulting in offspring with purple flowers and white flowers. The phenotypic ratio in the experiment is 3:1, with three out of four offspring having purple flowers. The result of 7.614 indicates statistical significance at a level of 0.05.
Step-by-step explanation:
In Monica's corn breeding experiment, she conducted a cross between two parent corn plants with different genotypes: PPss and ppSS. The Punnett square analysis of this cross shows that the offspring can have different genotypes and phenotypes, including purple flowers with yellow peas and white flowers with yellow peas. The phenotypic ratio in this case is 3:1, meaning that three out of four offspring will have purple flowers and one out of four will have white flowers. The result of 7.614 in the formula provided indicates that the experiment is statistically significant at a level of 0.05.