Can nucleic acids diffuse through membrane

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

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.