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The gene for tongue rolling is dominant. The mother’s genotype is tt, and the father’s genotype is Tt. What are the chances that he will be able to roll his tongue?
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The gene for tongue rolling is dominant. The mother’s genotype is tt, and the father’s genotype is Tt. What are the chances that he will be able to roll his tongue?

User Swydell
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2 Answers

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I would say he has a 50% chance of doing either or...
User Vmg
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7.0k points
6 votes
50% Tt 50% tt.  The child has a 50% chance of being able to roll his tongue.
User UKB
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6.8k points
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