8.Some reference populations, such as that of Native Americans, are very poorly profiled for their DNA ancestry. Given that fact, what does it mean if you get a DNA result that says you
have less Native American ancestry than what your family tree suggests?

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.