| A | B |
|---|
| Chromosome | Genetic material that is made up of genes |
| Gene | A unit of heredity that controls one or more traits |
| Cell | The building block of life |
| Nucleus | Control center of a cell |
| Karyotype | A rearranging picture of chromosomes |
| Number of chromosomes in each human cell | 46 |
| Number of chromosome pairs in the human karyotype | 23 |
| The abbreviation of deoxyribonucleic acid | DNA |
| What DNA is made of | A phosphate group, a sugar, and a nitrogen base. |
| Types of bases of DNA | tymine, cytosine, adenine, and guanine |
| A Helix | looks like a corkscrew or spiral staircase |
| People who discovered the structure of DNA | James Watson and Franci Crick |
| Genetic Code | The order of the nitrogen base pairs on the ladder |
| Replication | MEthod by which chromosomes copy themselves |
| X shaped chromosome | associated with femaleness |
| Y shaped chromosome | associated with maleness |
| Chromosome pair of XY | female offspring |
| Chromosome pair of XX | male offspring |
