A geneticist is studying squirrels and has found that
both color and tail length follow a typical
dominant/recessive inheritance pattern. The black gene
(B) is dominant over the brown gene (b), and the long
tail gene (L) is dominant over the short gene (). The
researcher has performed a cross between a
heterozygous black male squirrel with a long tail (BBL)
and a homozygous female brown squirrel with a short
tail (bbll). The phenotypes of the 160 offspring can be
found in this chart.

With this information, what is the recombination
frequency of the color and tail-length genes?
O 11.9%
O 13.1%
25%
O 50%