The Gene "C" Codes for the Membrane-Associated Protein C,responsible for Signal

question 13

Multiple Choice

The gene "C" codes for the membrane-associated protein C,responsible for signal transduction.A mutant allele of this gene,C^m,encodes a malfunctioning C protein,which has the same size as the wild type and associates with the plasma membrane like the wild type,but it has no function in signal.With respect to the expression of the C proteins,the wild-type allele is:

• A)codominant to the C^m allele.
• B)dominant to the C^m allele.
• C)haploinsufficient.
• D)incompletely dominant to the C^m allele.
• E)recessive to the C^m allele.

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Definitions:

Stratum Corneum

The outermost layer of the epidermis, consisting of dead keratinocytes, that provides a barrier against environmental damage.

Cuticle

The protective layer, often of dead cells, found at the surface of the skin or around the base of nails and hair.

Nail Plate

The hard, protective, translucent part of the nail composed of keratin, covering the nail bed and forming the visible nail.

Epidermis

The outermost layer of the skin that acts as a barrier against environmental damage and pathogens.