| A | B |
|---|
| mutation | A permanent gene change |
| trisomy | An individual has one extra chromosome. |
| monosomy | An individual is missing one chromosome. |
| haploidy | Only half the number of chromosomes is present. |
| polyploidy | Two or more complete sets of chromosomes are present. |
| translocation | A part of one chromosome is attached to a different chromosome. |
| deletion | A part of a chromosome is lost. |
| inversion | A part of a chromosome is inverted, ex. ABCDE becomes ABCED. |
