In snapdragons, if we represent the alleles for petal color as follows:
- \( R \) = Red allele
- \( W \) = White allele
- \( P \) = Pink which arises from the incomplete dominance between \( R \) and \( W \).
The genotype for each flower color would be:
- Red flower: \( RR \)
- White flower: \( WW \)
- Pink flower: \( RW \)
If we cross a red flower (\( RR \)) with a pink flower (\( RW \)), the possible offspring genotypes can be determined by a Punnett square:
\[ \begin{array}{c|c|c} & R & R \ \hline R & RR & RR \ \hline W & RW & RW \ \end{array} \]
From this cross, the possible genotypes and their proportions are:
- \( RR \) (Red): 2 (or 50%)
- \( RW \) (Pink): 2 (or 50%)
Thus, there are no \( WW \) genotypes (which would lead to white flowers) produced from this cross.
Therefore, the chance of getting a white flower from this cross is 0%.
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