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Distribution of the serotonin transporter (5-HTT) genotypes in chicks exhibiting walking and jumping behaviors in the avoidance test.
| Genotypes | ||||
|---|---|---|---|---|
| Subjects | N | W/W | W/D | D/D |
| nW-nJ | 47 | 26 | 14 | 7 |
| nW-J | 69 | 19 | 17 | 33 |
| W-nJ | 17 | 5 | 7 | 5 |
| W-J | 86 | 27 | 31 | 28 |
nW-nJ, chicks failed to walk and to jump off; nW-J, chicks failed to walk, but jumped off; W-nJ, chicks walked, but failed to jump off; W-J, chicks walked and jumped off. Chi-square analysis: χ2 = 18.46, df = 6, P = 0.0052.
