| A | B |
|---|
| Replication | When DNA makes an exact copy of itself. |
| Gene | A portion of a DNA molecule that is the code for a single protein. |
| Transcription | The process of making a mRNA. |
| Mutation | Any mistake or change in the DNA sequence. |
| Point Mutation | A change in a single base pair of DNA. |
| Frame Shift Mutation | A mutation in which a single base is added or deleted from DNA. |
| Chromosomal Mutation | A mutation at the chromosome level. |
| Nondisjunction | The failure of homologous chromosomes to separate properly during meiosis. |
| Karyotype | A charted arrangement of chromosomes. |
| Trisomy | When a zygote gets an extra chromosome. |
| Monosomy | When a zygote is missing a chromosome. |
