| 5A The DNA Trail | In:Reading Explorer 4 (2010) MacIntyre, P, Bohlke, D | ||
| Elements: | The DNA Trail | p.75 | |
| Elements: | Multiple choice | p.78 | |
| Adam African ancestor Asia blood chromosome descendants discovery DNA drop Europe Eve everybody evidence gene generations good history imperceptible journey love migration mutation proof research route story theory trail | |||
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