In petunias, the blue allele (B) is dominant to the red allele (b) for flower color. At a linked locus, the tall allele (T) is dominant to the dwarf allele (t). The distance between the two loci is 21 cM. A plant has the chromosomes shown below. What percentage of gametes produced from this plant will have both the red and dwarf alleles? Enter only the numerical value for the percentage. Do not include the % symbol so that Moodle will grade this correctly.
A. 25
B. 50
C. 75
D. 100
