In four o’clock plants, many flower colors are observed. In a cross involving two true-breeding strains, one crimson and the other white, all of the generation were rose color. In the , four new phenotypes appeared along with the and parental colors. The following ratio was obtained:
Propose an explanation for the inheritance of these flower colors.

In shorthorn cattle, coat color may be red, white, or roan. Roan is an intermediate phenotype expressed as a mixture of red and white hairs. The following data were obtained from various crosses:

Does the roan phenotype illustrate a case of incomplete dominance or a case of codominance? Explain.

Which of the following is NOT a type of dominance?

Which of the following parents could produce offspring with an AB blood type?

Blood types are an example of what type of dominance?

How were early geneticists able to ascertain inheritance patterns that did not fit typical Mendelian ratios?