Final answer:
A paracentric inversion is a chromosomal inversion that does not include the centromere. It occurs outside of the centromere and does not change the relative lengths of the chromosome arms.
Step-by-step explanation:
A chromosomal inversion that does not include the centromere is a paracentric inversion. Inversions are a type of chromosomal rearrangement where a segment of a chromosome breaks off, reverses its orientation, and reattaches to the original position. Pericentric inversions include the centromere and can change the relative lengths of the chromosome arms, while paracentric inversions occur outside of the centromere and do not affect the relative lengths.