| 1 | Each color corresponds to one of four nucleotides. | |
| 2 | Those nucleotides hooked up into strands as more seeped inside. | |
| 3 | These strings of nucleotides are called short tandem repeats. | |
| 4 | A typical molecule of DNA contains up to three billion nucleotides. | |
| 5 | DNA analysis looks for patterns of two or more nucleotides, the chemicals that form DNA. |
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