Mitral Valve Prolapse (MVP) Generates a Murmur Associated with the ________

question 26

Multiple Choice

Mitral valve prolapse (MVP) generates a murmur associated with the ________ heart sound that occurs when the ________.

• A) lubb (S1); atria contract
• B) dupp (S2); atria relax
• C) lubb (S1); ventricles contract
• D) dupp (S2); ventricles relax
• E) lubb (S1); ventricles relax

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Definitions:

Allele

One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

Blending Inheritance

An outdated theory of heredity proposing that the traits of offspring are a uniform blend of the parents' traits.

Dominant Alleles

Alleles that mask the effect of other alleles for the same gene in heterozygous individuals, determining the phenotype.

Recessive Alleles

Genetic variations that must be present in two copies (homozygous) to express a trait, as opposed to dominant alleles that require only one copy.