Across
- 2. - African variant defending against sleeping sickness.
- 4. - Gene linked to starch digestion; copy number varies.
- 7. - "Duffy null" gene blocking a malaria parasite.
- 10. - Δ32 deletion gives HIV resistance (found in Europeans).
- 12. - Mutation causing alcohol flush in East Asians.
Down
- 1. - Tibetans’ gene for high-altitude adaptation.
- 3. - Gene enabling lactose digestion in adults (dairy evolution).
- 5. - Gene tied to red hair and fair skin in Europeans.
- 6. - East Asian variant linked to thick hair and sweat glands.
- 8. - X-linked enzyme deficiency protecting against malaria.
- 9. - Gene associated with blue eyes and light skin.
- 11. - Gene linked to reduced wisdom teeth in humans.
- 13. - Mutation causing sickle cell trait but resists malaria.