| A | B |
| Allele | One of two or more alternate forms of a gene |
| Meiosis | Type of nuclear division that produces egg and sperm. |
| Haploid | Term meaning half of the total chromosomes. |
| Diploid | Term meaning total chromosomes in an organism. |
| Synapsis | The connecting together of homologous chromosomes in meiosis. |
| Tetrad | Group of two homologous chromosomes together. |
| Oocyte | Only cell in the female's body that goes through meiosis. |
| Spermatocyte | Only cell in the male's body that goes through meiosis. |
| Gamete | Another name for a sperm or egg cell. |
| Germ cell | Another name for a sperm or egg cell. |
| Fertilization | The process of egg uniting with sperm. |
| Zygote | First cell of a new baby--a fertilized egg. |
| Karyotype | A chart with the chromosomes arranged in pairs by size. |
| Homologous | Chromosomes from mom and dad that match are said to be ______________ chromosomes. |
| Somatic | Body cells are also said to be ________ cells. |
| Crossing Over | When homologous chromosomes switch genes during synapsis. |
| Interkinesis | The time between the two divisions of meiosis. |
| Egg | Female gamete. |
| Sperm | Male gamete. |
| Gametogenesis | Process of producing gametes. |
| Spermatogenesis | Process of producing sperm. |
| Oogenesis | Process of producing the egg. |
| Polar bodies | Three cells that do not become the egg during oogenesis. |
| Gene locus | The exact location of a gene on a chromosome. |