Question

the passage describes one of the petal-color traits in snapdragon flowers:the snapdragon is a popular garden flower. many snapdragons produce pigments called anthocyanins. snapdragons that produce high levels of these pigments have red petals. other snapdragons do not produce anthocyanins and have white petals.in a group of snapdragons, some plants have red petals, some have white petals, and some have pink petals. petal color is dependent on anthocyanin production. in this group, one of the genes for anthocyanin production has two alleles. the allele for incomplete dominance over the allele for no anthocyanin production that results in white petals ($a^{w}$). so heterozygotes have pink petals.red petalspink petalswhite petalscomplete the punnett square to show all possible genotypes of the offspring from a cross between two snapdragons: one with pink petals and one with red petals.$a^{r}$ $a^{r}LXB0a^{w}$

Explanation:

Step1: Identify parent genotypes

Red petals: $A^R A^R$, Pink petals: $A^R A^W$

Step2: Set up Punnett square rows/columns

Male gametes: $A^R, A^R$; Female gametes: $A^R, A^W$

Step3: Fill top-left genotype

Combine $A^R$ (row) + $A^R$ (column): $A^R A^R$

Step4: Fill top-right genotype

Combine $A^R$ (row) + $A^W$ (column): $A^R A^W$

Step5: Fill bottom-left genotype

Combine $A^R$ (row) + $A^R$ (column): $A^R A^R$

Step6: Fill bottom-right genotype

Combine $A^R$ (row) + $A^W$ (column): $A^R A^W$

Answer:

Top-left box: $A^R A^R$
Top-right box: $A^R A^W$
Bottom-left box: $A^R A^R$
Bottom-right box: $A^R A^W$