Two People (Both Heterozygotes) Are Able to Taste a Chemical

question 31

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 not to be able to taste PTC?

• A) 3/4
• B) All
• C) 1/4
• D) 2/3
• E) none

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Income

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