The Ability to Roll the Tongue Is Caused by a Dominant

question 34

Multiple Choice

The ability to roll the tongue is caused by a dominant allele.A woman is a "roller, " but one of her parents is not.What is the woman's genotype?

• A)Homozygous dominant
• B)Heterozygous
• C)Homozygous recessive
• D)Either homozygous recessive or homozygous dominant
• E)Cannot be determined from this information

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