This passage describes the ground spot color trait in watermelon plants:
Watermelon plants grow with their fruit resting on the ground. Over time, the bottom of each fruit develops a white or yellow spot called a ground spot. In some types of watermelon plants, the color of the ground spot is an inherited trait.
In a group of watermelon plants, some individuals have a yellow ground spot and others have a white ground spot. In this group, the gene for the ground spot color trait has two alleles. The allele G is for a yellow ground spot, and the allele g is for a white ground spot.
A certain watermelon plant is from this group. This watermelon plant's phenotype for the ground spot color trait is a yellow ground spot. This plant's genotype for the ground spot color gene is GG.
Based on this information, complete the following statement.