**Category:** Genetics  
**Subtype:** Mendelian inheritance, gene linkage  
**Problem Description:** This problem involves a plant species with complete dominance in traits determined by alleles. It examines the outcomes of genetic crosses, specifically focusing on the phenotypic ratios in the offspring (F1 and F2 generations) and the effects of genetic recombination (crossing over) on these ratios. The problem asks how many of the given statements about genetic outcomes and probabilities are correct.

1. **Statement A:** Discusses the frequency of genetic recombination in the F1 generation.
2. **Statement B:** Considers the results of a test cross involving F1 plants and the expected phenotypic ratios.
3. **Statement C:** Evaluates the probability of obtaining a purebred plant from a specific phenotype in the F2 generation.
4. **Statement D:** Assesses the probability of obtaining a purebred plant from another specific phenotype in the F2 generation.

The problem requires understanding of genetic principles such as dominance, segregation, and recombination to determine the validity of the statements.