Question: Genetics Two human traits controlled by a single gene are the ability to roll ones tongue and whether ones ear lobes are free or attached

Genetics Two human traits controlled by a single gene are the ability to roll one’s tongue and whether one’s ear lobes are free or attached to the neck. Genetic theory says that people will have neither, one, or both of these traits in the ratio 1:3:3:9 (1 attached, noncurling; 3 attached, curling; 3 free, noncurling; 9 free, curling). An introductory biology class of 122 students collected the data shown. Are they consistent with the genetic theory? Test an appropriate hypothesis and state your conclusion.

Trait Attached, Attached, Free, Free, Noncurling Curling Noncurling Curling 22 31 59

Trait Attached, Attached, Free, Free, Noncurling Curling Noncurling Curling 22 31 59 Count 10

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H 0 The proportions of traits are as specified by the ratio 1339 H A The proportions of trait... View full answer

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