Which Statement Reflects the Criterion for Autosomal-Dominant Transmission of Single-Gene

question 3

Multiple Choice

Which statement reflects the criterion for autosomal-dominant transmission of single-gene traits?

• A)The risk for a person who is homozygous for the trait to transmit the trait to his or her children is 100% with each pregnancy.
• B)The trait often remains unexpressed within a kindred for many generations until a change in environment promotes its expression.
• C)Males in a kindred are more likely to express the trait when the mother has the trait, and females in a kindred are more likely to express the trait when the father has the trait.
• D)Females in a kindred are more likely to express the trait when the mother has the trait, and males in a kindred are more likely to express the trait when the father has the trait.

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Definitions:

Navicular

Refers to the navicular bone in the foot, involved in forming the arch of the foot, or the navicular bone in the wrist.

Medial Malleolus

The bony prominence on the inner side of the ankle, part of the tibia's distal extremity, contributing to the ankle joint's stability.

Lateral Malleolus

The hard protrusion located on the external part of the ankle, which constitutes the bottom portion of the fibula.

Radial Styloid Process

A bony protrusion at the distal end of the radius bone in the forearm, which is palpable on the thumb side of the wrist.