| A | B |
| DNA | a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information |
| Nucleotide | Nucleotides form the basic structural unit of DNA. They are composed of a sugar, a phosphate and a Base (ATCG) |
| Gene | A section of DNA that codes for a TRAIT |
| Centromere | The center of a Chromosome |
| Nucleus | A structure inside cells that contain the DNA (chromosomes) |
| Chromosome | DNA that is organized (or knitted) into an X like structure |
| Double Helix | The shape of the DNA molecule |
| Base Pairs | Part of the nucleotide that bonds together to form the AT and CG pairs |
| Genome | The entire set of chromosomes of an individual |
| Autosomes | Chromosomes that carry genes for the structure and function of the individual |
| Sex Chromosomes | The chromosomes that determine the sex of an individual |
| XX | Female |
| XY | male |
| Haploid | Half the full set of chromosomes |
| Diploid | The set of chromosomes that contain both the mom and dad's chromosomes |
| Sperm | Male sex cell |
| Egg | Female sex cell |
| Cell | The basic living unit of all life forms |
| Trait | A characteristic of an individual, like eye color |
| Homologous Chromosomes | The pairing of the mom and dad's chromosomes |
| Karyotype | A display of an individual's chromosomes organized into homologous chromosomes |