Snapdragons are flowers that come in a variety of colours, including red, pink, and white. A series of crosses wit snapdragons having flowers of different colours produced the following results:
Pink × pink: 27 pink, 13 red, 14 white red × red: all red
White × white: all white
Pink × white: 29 pink, 26 white pink × red: 28 pink, 27 red white × red: all pink
Based on the results, what is the most reasonable explanation for the inheritance of these flower colours?

Question

Quizplus · Accepted Answer

The results suggest incomplete dominance because the pink flowers result from the cross between red and white flowers, indicating that neither the red nor the white allele is completely dominant over the other, leading to a blend (pink) in the heterozygous condition.

Snapdragons Are Flowers That Come in a Variety of Colours