What ratio explains the purple darker flowers and wait flower in the second generation?

The ratio that typically explains the presence of darker purple flowers and lighter flowers in the second generation is a Mendelian inheritance ratio, often 3:1 or 1:2:1, depending on the dominance of the traits involved. If purple flowers are dominant over white, the 3:1 ratio would suggest that three offspring exhibit the dominant trait (purple) for every one that shows the recessive trait (white) in a monohybrid cross. In a dihybrid cross, the ratio could vary, but the principles of dominance still apply.