Answer :
To determine the genotypic ratio of the offspring, we need to consider the possible combinations of alleles that can be inherited from the parent flowers. In this scenario, the possible combinations are:
- Offspring with RR genotype: This can only occur if both parent flowers contribute their R allele. However, since both parent flowers are pink (RW genotype), none of the offspring will have the RR genotype.
- Offspring with RW genotype: This can occur if one parent flower contributes its R allele and the other contributes its W allele. Since both parent flowers are pink (RW genotype), all of the offspring will have the RW genotype.
- Offspring with WW genotype: This can only occur if both parent flowers contribute their W allele. Since both parent flowers are pink (RW genotype), none of the offspring will have the WW genotype.
Based on this information, the expected genotypic ratio of the offspring is:
0 RR : 4 RW : 0 WW
Therefore, the correct answer is A. 0 RR : 4 RW : 0 WW.
