Suppose "A" Is a Dominant Gene for the Ability to Taste

question 46

Multiple Choice

 Suppose "A" is a dominant gene for the ability to taste phenylthiocarbamide (PTC) and "a" is a recessive gene for the inability to taste it. Which couples could possibly have both a child who tastes it and a child who does not?

• A) father AA, mother aa
• B) father Aa, mother AA
• C) father Aa, mother Aa
• D) father AA, mother AA

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