In mice, recessive traits bent (b=bent tails) and rough (r=ragged fur) are linked on the autosome. Pure breeding bent mice were crossed to pure-breeding rough mice, and resulting F1 sons and daughters were interbred, with following results: (Not test cross)
• Wild-type: 204
• Bent tails: 92
• Rough Fur: 100
• Bent & rough: 4
• Total: 400
What is your best approximation in map units of distance between bent and rough?