A family pedigree shows how a particular mutation affects individuals and their offspring. Horizontal lines connect parents, whi
le vertical lines lead from parent to child. The family pedigree below shows how the mutation for color blindness affects three generations.
What does this pedigree suggest about genetic mutations?
A.
that mutations can be passed from one generation to the next
B.
that mutations always occur randomly in families
C.
that males cannot inherit a mutation
D.
that color blindness is a helpful mutation
The trachea serves as a passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.
