A Stethoscope Placed at the Right Sternal Border, Second Interspace

question 5

Multiple Choice

A stethoscope placed at the right sternal border, second interspace, would pick up sounds of the _______________.

• A) pulmonary valve
• B) valve of the inferior vena cava
• C) aortic valve
• D) right atrioventricular (tricuspid) valve
• E) left atrioventricular (mitral) valve

---

Definitions:

Intermediate Phenotype

A phenotype that exhibits a blend or mixture of characteristics between two extremes, often seen in incomplete dominance genetic scenarios.

Incomplete Dominance

A genetic phenomenon where neither allele of a gene fully dominates the other, resulting in a phenotype that is a blend or intermediate between the two parent alleles.

Codominance

A genetic scenario where two alleles of a gene are expressed equally in the phenotype of the organism.

Polygenic

Relating to or resulting from the influence of multiple genes, especially with regard to traits that exhibit a continuous distribution in the population.