The genotype of the F1 offspring, according to the information provided, is Ww for all four squares in the Punnett square.
Regarding the phenotype, since the allele for white flowers (W) is dominant over the allele for purple flowers (w), all F1 offspring with the genotype Ww will display the dominant phenotype. Therefore, the phenotype for all four offspring will be purple flowers.
To summarize:
- Genotype of F1 offspring: Ww
- Phenotype of F1 offspring: Purple flowers