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Question
The ability to roll the tongue is a dominant trait (R). The inability to roll the tongue is recessive (r). A student’s mother has a genotype of RR, and their father cannot roll his tongue. What is the father’s genotype?
Responses
A RRRR
B RrRr
C The father’s genotype cannot be determined by the information providedThe father’s genotype cannot be determined by the information provided
D rr