A gene for flower color can have multiple alleles like purple, white, or red.

true or false?

I would say it is true. However, since this is not my area of expertise, I don't know how many pairs of genes are devoted to color.

True. A gene for flower color can indeed have multiple alleles, which are different forms or versions of the same gene. In the case of flower color, there can be multiple alleles responsible for different colors, such as purple, white, or red.