1. **State the problem:** We are crossing red-flowered snapdragons (dominant homozygotes) with white-flowered snapdragons (recessive homozygotes) and want to find the percentage of progeny with pink flowers (heterozygotes). 2. **Genotype definitions:** - Red flowers: homozygous dominant, genotype $$RR$$ - White flowers: homozygous recessive, genotype $$rr$$ - Pink flowers: heterozygous, genotype $$Rr$$ 3. **Cross setup:** Cross $$RR \times rr$$. 4. **Punnett square:** - All offspring get one $$R$$ allele from the red parent and one $$r$$ allele from the white parent. - Therefore, all progeny have genotype $$Rr$$. 5. **Result:** - Since $$Rr$$ corresponds to pink flowers, 100% of the progeny will have pink flowers. **Final answer:** 100% of the progeny will have pink flowers.