Genetics Two human traits controlled by a single geneare the ability to roll one’s tongue and whether one’s earlobes are free or attached to the neck. Genetic theory saysthat people will have neither, one, or both of these traitsin the ratio 1:3:3:9 (1 attached, noncurling; 3 attached, curling; 3 free, noncurling; 9 free, curling). An Introduc-tory Biology class of 122 students collected the data shown. Are they consistent with the genetic theory? Testan appropriate hypothesis and state your conclusion. Trait Attached,noncurlingAttached,curlingFree,noncurlingFree,curlingCount 10 22 31 59

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