| A | B |
|---|
| chromosome | rod-shaped cell structure that passes on the traits |
| chromosome theory | theory that states that genes are found on chromosomes |
| meiosis | process that results in cells with half the number of chromosomes |
| sex chromosome | chromosome that determines the sex of an organism |
| mutation | change in chromosomes that causes a new trait to be inherited |
| DNA | deoxyribonucleic acid |
| replication | process in which DNA forms exact duplicates |
| fertilization | process when sperm cell enters an egg cell, sharing genetic information |
| sex-linked trait | charactertistic passed from parent to child on a sex chromosome |
| zygote | a fertilized egg cell |
