What is the expected phenotypic ratio from a cross between two heterozygous pink snapdragons?

To understand the expected phenotypic ratio from a cross between two heterozygous pink snapdragons, it's important to recognize that the color of snapdragons can exhibit incomplete dominance. In this case, we can assume:

• Red snaps are represented by the allele "R"

• White snaps are represented by the allele "r"

• Pink snaps, resulting from the heterozygous combination of red and white alleles, are represented by "Rr".

When two heterozygous pink snapdragons (Rr x Rr) are crossed, the possible gametes produced are R and r. The resulting combinations from the Punnett square will be:

• RR (red)

• Rr (pink)

• Rr (pink)

• rr (white)

When counting the phenotypes, we can summarize them as follows:

• 1 genotype is RR (red)

• 2 genotypes are Rr (pink)

• 1 genotype is rr (white)

This results in a phenotypic ratio of:

• 1 red (RR)

• 2 pink (Rr)

• 1 white (rr)

Thus, the final phenotypic ratio from this cross is 1 red, 2 pink