1.

IF_A_MOTHER_IS_A_NON_TONGUE_ROLLER_AND_FATHER_IS_A_TONGUE_ROLLER,_WHOSE_FATHER_WAS_A_NON-_ROLLER,_WHAT_IS_THE_PROBABILITY_OF_HAVING_A_ROLLER_DAUGHTER??$

A. 1/16
B. 1/2
C. 1/4
D. 1/8
Answer» D. 1/8


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