Mendelian inheritance preserves allele frequencies from one generation to the next.
This incomplete dominance of flower color gene preserves the ratio of C^R and C^W alleles between generations.
Over time, the allele frequencies reach Hardy-Weinberg equilibrium, assuming five idealized conditions:

• Extremely large population size.
• No gene flow due to migration.
• No mutations.
• Random mating.
• No natural selection.