Two People (Both Heterozygotes)are Able to Taste a Chemical Substance

question 73

Multiple Choice

Two people (both heterozygotes) are able to taste a chemical substance called PTC. The ability to taste PTC is caused by a dominant allele (T) . The inability to taste PTC is caused by a recessive allele (t) . What proportion of their children would be expected to have the ability to taste PTC?

• A)3/4
• B)1/2
• C)All
• D)1/4
• E)2/3

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