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When the diaphragm contracts and the chest expands (during breathing), the pressure inside the chest:
A. stays the same
B. decreases and air rushes in
C. increases and air rushes in
D. decreases and air rushes out
Select your answer:
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When can an acquired mutation be passed from parent to offspring?
A. only if the mutation occurs in sex cells
B. only if the mutation occurs in the y-chromosome
C. only if the parent has an acquired mutation in an autosomal chromosome
D. only if neither of the parents has the mutation in sex cells.