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果蝇杂交实验

果蝇杂交实验. 实验室果蝇品系. 常见性状及基因. 双因子杂交. 正交组合. ♀18 × 14♂ ( eevgvg 檀黑体 残翅 ). 反交组合. ♀14 ( eevgvg 檀黑体 残翅 ) × 18♂. F 1 野生型. 双因子 正交 ♀ 18 × 14♂ 姓名 日期. F 2 灰体长翅 ( 9 ) 灰体残翅 ( 3 ) 檀黑体长翅 ( 3 ) 檀黑体残翅 ( 1 ). 2 检验. 伴性遗传. ♀w ( ww 白眼 ) × 18♂ ( +Y ). 正交组合.

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果蝇杂交实验

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  1. 果蝇杂交实验

  2. 实验室果蝇品系

  3. 常见性状及基因

  4. 双因子杂交 正交组合 ♀18 × 14♂( eevgvg檀黑体 残翅 ) 反交组合 ♀14 ( eevgvg檀黑体 残翅 ) × 18♂ F1野生型 双因子 正交 ♀18 × 14♂ 姓名 日期 F2 灰体长翅 (9) 灰体残翅 (3) 檀黑体长翅 (3) 檀黑体残翅 (1) 2检验

  5. 伴性遗传 ♀w ( ww白眼 ) × 18♂(+Y) 正交组合 F1♀ w+ ♂wY F2 ♀+w ♀ww ♂+Y ♂wY 反交组合 ♀18 (++) × w♂( wY白眼 ) F1♀ w+ ♂+Y F2 ♀++ ♀+w ♂+Y ♂wY 2检验 交叉遗传,正反交不同

  6. 三点测交 杂交组合 ♀6( wmsn白眼小翅卷刚毛 ) × 18♂ w m sn + + + P × w m sn  w m sn w m sn ♂ × ♀ F1 + + +  F2相当于测交 假如用反交组合,结果怎样?

  7. F2 (8种表型) +++ wmsn ++sn wm+ +msn w++ +m+ w+sn 计算两基因间的重组值,绘制遗传学图。

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