In Pisum sativum, a pea plant, the allele for purple flowers (P) is dominant over the allele for white flowers (p). A cross between two purple-flowered plants resulted in both purple-flowered and white-flowered offspring, as shown in the table below.

In the space provided in your Answer Book, do the following:
• Draw a Punnett square that shows the cross between the two purple-flowered parent plants described above. When writing the allele pairings, underline all lowercase letters (p).
• Fill in the genotypes of the offspring on the Punnett square.
• Make a key to indicate which genotype produces which flower color.
On the lines provided in your Answer Book, do the following:
• Give the ratio of flower colors that can be expected from the cross.

• Explain how the data in the table and in the Punnett square helped you determine the ratio.