Question

In snapdragons, if white flowers are crossed with red flowers, all offspring have pink flowers. When two pink snapdragons are crossed, some offspring have white flowers, some have red flowers, and some have pink flowers. Which inheritance pattern do snapdragon flowers exhibit?
Responses

Polygenic trait
Polygenic trait

Sex-linked trait
Sex-linked trait

Codominance
Codominance

Incomplete dominance

Answer 1

The inheritance pattern exhibited by snapdragon flowers in this scenario is **incomplete dominance**. In incomplete dominance, the phenotype of the offspring is a blend of the phenotypes of the parents. In this case, when white flowers (homozygous for white) are crossed with red flowers (homozygous for red), the resulting offspring are all pink (heterozygous). When two pink snapdragons are crossed, the offspring can be white, pink, or red, indicating that the pink phenotype is not fully dominant over the white or red phenotypes, consistent with incomplete dominance.