Snapdragons, a flowering plant popular with gardeners, can have red, white, and pink colored petals. when snapdragons with red petals (rw) are crossed with snapdragons having white (ww) petals, the offspring have pink petals. the pink coloration (rw) is a phenotype in between the red and white parental phenotypes. what is this kind of inheritance pattern called?

Incomplete dominance

Explanation:

As mentioned in the question Snapdragons can have red, white, and pink colored petals. This is because snapdragon is such a plant which displays the phenomenon of incomplete dominance in flower petal colors. If the plant will have genotype RR, their petals would be red in color. If the genotype would be WW their petals would be white in color. However, if we cross a plant with red petals with a plant of white petals, the offspring plants will have flower with pink petals RW.

Why is this so?

This is because neither or red and white alleles are completely dominant over each other. Both give their own expression and the resultant color is therfore a blend of both parental colors. It can also be a reason that white could dilute the red and flower will get pink and  incomplete dominance. As depicted in the figure attached, all the offspring will have pink trait in F1 generation.

Hope it help!

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