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

question 14

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

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Definitions:

Characteristics

Traits or features that define or distinguish a person, object, or phenomenon.

Situation

A situation is a set of circumstances or a scenario in which an individual finds themselves, influencing their actions or decisions.

Self-direction

The ability of an individual to set their own goals and to take initiative in planning and executing tasks without external influence.

Strong Need

A compelling or critical requirement for something essential or very important.