| A | B |
|---|
| Diploid | a cell with two of each kind of chromosome (2n) |
| Haploid | a cell containing one of each kind of chromosome (n) |
| homologous chromosomes | two chromosomes of each pair in a diploid cell |
| meiosis | cell division where one body cell produces four gametes |
| sperm | male gamete |
| egg | female gamete |
| sexual reproduction | fusion of gametes |
| crossing over | homologous chromosomes break and exchange genetic material during Prophase I |
| genetic recombination | reassortment of chromosomes and the genetic info they carry by crossing over or independent segregation of homologous chromosomes |
| nondisjuntion | failure of homologous chromosomes to separate properly during meiosis |
