| A | B |
| mutation | any change in an organism's genetic material |
| gene mutation | changes in the sequence of bases in a gene |
| somatic mutations | changes in body cells |
| germ mutations | mutations that occur in the gametes |
| chromosomal mutation | changes in the number of chromosomes |
| diploid | two sets of chromosomes |
| inbreeding | breeding organisms with close relatives |
| crossbreeding | breeding organisms with very different traits |
| genetic engineering | special techniques to control genetic material |
| selective breeding | breeding organisms with desirable traits |