This genetic map is for chromosome 2 of the Drosophila genome. The map shows the location of genes responsible for different recessive phenotypes, and their distances from the telomere in units of centimorgans (cM). A pure breeding female with vestigial wings (vw/vw), purple eyes (pr/pr), and black body (bb/bb) was mated to a male that was wildtype (+) at all three loci to generate F1 trihybrid flies with the genotype vw pr bb / vw+ pr+ bb+. Based on the genetic map, what is the probability that the F1 produces the following type of gametes (assume no effect of the centromere on recombination): vw pr+ bb+