The Ability to Taste PTC Is a Dominant Trait

question 19

Multiple Choice

The ability to taste PTC is a dominant trait.If a heterozygote woman has a child with a man who is not a taster,what is the chance their child will be a taster?

• A)100%
• B)75%
• C)50%
• D)25%
• E)0%

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Definitions:

Phospholipase C

An enzyme that plays a key role in cell signaling processes by hydrolyzing phospholipids to produce inositol triphosphate (IP3) and diacylglycerol (DAG), important secondary messengers.

Protein Kinase C

an enzyme that modifies other proteins by chemically adding phosphate groups to them, important in various cellular processes.

Signal Transduction

The process by which a chemical or physical signal is transmitted through a cell as a series of molecular events.

Second Messengers

Intracellular signaling molecules that are released in response to activation of cell surface receptors, mediating the effects of hormones and other signals.