What makes a dominant allele different from a recessive allele?
a. the recessive allele determines the trait.
b. the dominant allele always mixes with the recessive allele.
c. the dominant allele determines the trait.
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d. there are always two dominant alleles.

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.