In squirrels, bushy tail (B) is dominant to smooth tail (b), and gray coat (G) is dominant to brown coat (g). These two loci are linked. Pure-breeding gray, smooth-tailed squirrels were mated to pure-breeding brown, bushy-tailed squirrels. The F1 were testcrossed. Testcross progeny consisted of 278 gray, smooth-tailed, 25 gray, bushy-tailed, 306 brown, bushy-tailed, and 35 brown, smooth-tailed squirrels. Required:
Calculate the map distance between these two genes in centimorgans.